A meaning

ā
A is the first letter in the English alphabet.

An example of a is the first letter in the word "apple."

noun
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9
The best or highest in quality or rank.

Grade A milk.

noun
25
8
The first letter of the modern English alphabet.
noun
20
11
Any of the speech sounds represented by the letter a.
noun
17
10
The first in a series.
noun
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12
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Any.

Not a drop to drink.

indefinite article
9
1
Something shaped like the letter A.
noun
8
3
Acre.
abbreviation
7
0
Accusative.
abbreviation
7
1
Angstrom.
abbreviation
7
1
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Answer.
abbreviation
6
1
Area.
abbreviation
6
1
Assist.
abbreviation
6
1
Adjective.
abbreviation
5
0
Ante (before)
abbreviation
5
0
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Without; not.

Amoral.

prefix
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The first letter of the English alphabet: from the Greek alpha, a borrowing from the Phoenician.
noun
5
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First in a sequence or group.
adjective
5
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Shaped like A.
adjective
5
0
One; one sort of.

We planted a tree.

adjective
5
0
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One of the four major blood groups in the ABO system. Individuals with this blood group have the A antigen on the surface of their red blood cells, and the anti-B antibody in their blood serum.
noun
4
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To each; in each; for each; per.

Once a day.

preposition
4
0
Acceleration.
abbreviation
4
1
Are (measurement)
abbreviation
4
1
Ace.
abbreviation
4
1
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Across.
abbreviation
3
3
Adenine.
abbreviation
3
4
Alto.
abbreviation
3
4
Ampere.
abbreviation
3
4
The same.

Birds of a feather.

indefinite article
2
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The first in a sequence or group.
noun
2
0
An object shaped like A.
noun
2
0
Of a or A.
adjective
2
0
Each; any one [a gun is dangerous]
adjective
2
0
Used before terms that denote number, amount, quantity, or degree.

Only a few of the voters; a bit more rest; a little excited.

indefinite article
2
5
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All.
adjective
1
1
About.
abbreviation
1
1
Absent.
abbreviation
1
1
Acceleration.
abbreviation
1
1
Active.
abbreviation
1
1
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Adjective.
abbreviation
0
0
Adult.
abbreviation
0
0
Alto.
abbreviation
0
0

7:00 a.

abbreviation
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0
Answer.
abbreviation
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0
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Are (unit of area)
abbreviation
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0
Atto-
abbreviation
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0
A blood type.
noun
0
0
A grade indicating excellence.

An A in history.

noun
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First-class; A 1
adjective
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Absolute.
abbreviation
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Adenine.
abbreviation
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0
America(n)
abbreviation
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Ampere.
abbreviation
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Analog.
abbreviation
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Angstrom.
abbreviation
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Anode.
abbreviation
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Answer.
abbreviation
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April.
abbreviation
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Argon.
abbreviation
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Assist(s)
abbreviation
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Attendance.
abbreviation
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August.
abbreviation
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In, into, on, at, to.

Ashore, abed.

affix
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In the act or state of.

Asleep, a-crying, a-wishing.

affix
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Up, out: now generally used as an intensive.

Awake, arise.

affix
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0
Off, of.

Akin.

affix
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Not, without.

Amoral, atypical.

affix
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0

Avert.

affix
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Ascribe.

affix
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A ligature used to represent a diphthong in some Latin words, equivalent to ai in Greek, usually written æ or replaced by e in modern spelling of derived English words, as in demon (daemon), ether (aether), etc. and pronounced (ē, i, or e)
noun
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0
An Old English ligature representing a low front unrounded vowel like that in Modern English hat.
noun
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0
A character in the International Phonetic Alphabet and some other transcription systems, representing this low front unrounded vowel.
noun
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0
Adenine.
abbreviation
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0
Ampere.
abbreviation
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0
Angstrom.
abbreviation
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Area.
abbreviation
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Abbreviation of adenine , ampere , angstrom , area.
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Abbreviation of <bld>angstrom</bld>
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A prefix meaning “without” or “not” when forming an adjective (such as amorphous, without form, or atypical, not typical), and “absence of” when forming a noun (such as arrhythmia, absence of rhythm). Before a vowel or h it becomes an– (as in anhydrous, anoxia ).
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The designation for the first floppy disk drive in the first PCs. In PCs with two floppy drives, the second was B:. See B:, C: and floppy disk.
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See ampere.
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The first letter of the English alphabet, called a and written in the Latin script.
letter
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The name of the Latin script letter A/a.
noun
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One; any indefinite example of; used to denote a singular item of a group. [First attested prior to 1150]

There was a man here looking for you yesterday.

article
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Used in conjunction with the adjectives score, dozen, hundred, thousand, and million, as a function word.

I've seen it happen a hundred times.

article
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One certain or particular; any single. [First attested between around 1150 to 1350]

We've received an interesting letter from a Mrs. Miggins of London.

article
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The same; one. [16th Century]

We are of a mind on matters of morals.

article
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Any, every; used before a noun which has become modified to limit its scope; also used with a negative to indicate not a single one.

A man who dies intestate leaves his children troubles and difficulties.

He fell all that way, and hasn't a bump on his head?

article
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Used before plural nouns modified by few, good many, couple, great many, etc.
article
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0
Someone or something like; similar to; Used before a proper noun to create an example out of it.

The center of the village was becoming a Times Square.

article
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(archaic) To do with position or direction; In, on, at, by, towards, onto. [First attested before 1150]

Stand a tiptoe.

preposition
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To do with separation; In, into. [First attested before 1150]

Torn a pieces.

preposition
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​ (archaic or slang) Have. [between 1150 and 1350, continued in some use until 1650; used again after 1950]
  • 1604 (facsimile printed between 1830 and 1910), William Shakespeare, Hamlet.
    So would I a done by yonder ſunne.
    And thou hadſt not come to my bed.

I'd a come, if you'd a asked.

verb
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A meaningless syllable; ah.
interjection
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(archaic, slang) Of.

The name of John a Gaunt.

preposition
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(chiefly Scotland) All. [First attested from 1350 to 1470.]
adverb
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Distance from leading edge to aerodynamic center.
symbol
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Specific absorption coefficient.
symbol
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Specific rotation.
symbol
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Allele (recessive)
symbol
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The first letter of the English alphabet, called a and written in the Latin script.

Apple starts with A.

letter
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The ordinal number first, derived from this letter of the English alphabet, called a and written in the Latin script.

The item A is "foods", the item B is "drinks".

numeral
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The highest rank on any of various scales that assign letters.
  • Bond rating.

We assign each item inspected a rating from A through G, depending on various factors.

symbol
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(education) The highest letter grade assigned (disregarding plusses and minuses).

I was so happy to get an A on that test.

symbol
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(music) A tone three fifths above C in the cycle of fifths; the sixth tone of the C major scale; the first note of the minor scale of A minor; the reference tone that occurs at exactly 440 Hz; the printed or written note A; the scale with A as its keynote.

Orchestras traditionally tune to a concert A.

symbol
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(medicine) A blood type that has a specific antigen that aggravates the immune response in people with type B antigen in their blood. They may receive blood from type A or type O, but cannot receive blood from AB or B.

My blood type is A negative.

symbol
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(chemistry) Mass number.
symbol
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(logic) A universal affirmative suggestion.
symbol
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Acoustic source.
symbol
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Actual weight of an aircraft.
symbol
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(historical) Adulterer, adulteress.
symbol
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Alaska Steamship Company.
symbol
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Alcoa Steamship Company.
symbol
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Allele dominant.
symbol
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Alveolar gas.
symbol
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0
American Stock Exchange.
symbol
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Ammunition examiner.
symbol
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0
Anchor Line.
symbol
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Aspect ratio.
symbol
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0
Assembly Bill.
symbol
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0
Smallest of the brassiere cup sizes.
symbol
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Chemical activity.
symbol
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First van der Waals constant.
symbol
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Fraunhofer line for oxygen.
symbol
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(aviation) Hail.
symbol
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0
(in newspaper stock listings) Includes extras.
symbol
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0
Linear acceleration.
symbol
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Mean sound absorption coefficient.
symbol
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Shoe size narrower than B.
symbol
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(baseball) Single A league, one of the lowest professional leagues.
symbol
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Total acidity.
symbol
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abbreviation
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abbreviation
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Adult; as used in film rating.
abbreviation
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abbreviation
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(physics) Angstrom.
abbreviation
0
0
abbreviation
0
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(sports) An assist.
abbreviation
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(weaponry) Atom; atomic.
abbreviation
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(archaic) Alternative form of a (pronoun)
pronoun
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0
(archaic) Alternative form of a (verb)
pronoun
0
0
Eye dialect spelling of have.
verb
0
0
An ASCII representation of the enclosed capital A or circle-A, Ⓐ.
symbol
0
0
Plural form of -um.
suffix
0
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Plural form of -on.
suffix
0
0
(Geordie) Same as -er in Standard English.
suffix
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(slang) Used to replace -er in nouns.
suffix
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Marks singular nouns, with a foundation in Greek or Latin, often implying femininity, especially when contrasted with words terminating in -us.
suffix
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Changes an element or substance into an oxide.
suffix
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(slang) Alternative form of -'ve.
suffix
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Marks nouns, with a foundation in Italian, Spanish, or Portuguese, implying femininity.
suffix
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0
Added for metrical reasons to poetry and verse.
suffix
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(slang) Clitic form of o'
suffix
0
0
(informal) To.

Oughta.

suffix
0
0
(slang) Australian dollar.
abbreviation
0
0
An academic grade, higher than A. Where it is used, it is often the best class of result.
noun
0
0
(computer science) A best-first graph search algorithm for finding a lowest-cost path to a goal.
noun
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0
abbreviation
0
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abbreviation
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Absolute temperature.
abbreviation
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0
abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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Accusative case.
abbreviation
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abbreviation
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Acre; acres.

A; a.

abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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Age; aged.
abbreviation
0
0
abbreviation
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Air branch.
abbreviation
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0
abbreviation
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0
abbreviation
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0
abbreviation
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0
abbreviation
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abbreviation
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abbreviation
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abbreviation
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(biblical) Amos, the book of.
abbreviation
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0
abbreviation
0
0
abbreviation
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0
abbreviation
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abbreviation
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Annō (in the year)
abbreviation
0
0
Annus (a year)
abbreviation
0
0
abbreviation
0
0

Ans.; ans; A.

abbreviation
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0
Ante (before)
abbreviation
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0
abbreviation
0
0
abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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abbreviation
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(military) Assault, as on a badge.
abbreviation
0
0
abbreviation
0
0
abbreviation
0
0
abbreviation
0
0
abbreviation
0
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abbreviation
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Atomic; atomic weight.
abbreviation
0
0
abbreviation
0
0
abbreviation
0
0
abbreviation
0
0
abbreviation
0
0
abbreviation
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abbreviation
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Avancé (fast)
abbreviation
0
0
Alternative form of A-.
noun
0
0
A musical note that lies a chromatic semitone above A and a diatonic semitone below B, thus being enharmonic to B♭; the eleventh semitone of the solfege; when calculated in equal temperament with a reference of A above middle C as 440 hertz, it has a frequency of approximately 466.164 Hz.
noun
0
0
(computing) The ASCII control character start of header in caret notation.
symbol
0
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Alternative spelling of a (all). [First attested from 1350 to 1470.]
adverb
0
0
Euphemistic spelling of ass.
noun
0
0
(metrology) Symbol for the attoohm, an SI unit of electrical resistance equal to 10−18 ohms.
symbol
0
0
(archaic) Alternative form of Aeaea.
pronoun
0
0
Used before nouns and noun phrases that denote a single but unspecified person or thing.

A region; a person.

indefinite article
0
1
In every; to each; per.

Once a month; one dollar a pound.

preposition
0
1
Have.

He'd a come if he could.

verb
0
1
Anno (in the year)
abbreviation
0
1
Annus (year)
abbreviation
0
1
Anode.
abbreviation
0
1
Anterior.
abbreviation
0
1
On; in.

Abed.

prefix
0
1
In the act of.

Aborning.

prefix
0
1
In the direction of.

Astern.

prefix
0
1
In a specified state or condition.

Abuzz.

prefix
0
1
Any of the speech sounds that this letter represents, as, in English, the vowel (a) of hat, (ä) of father, (ā) of bake, or (ô) of call.
noun
0
1
A type or impression for a or A.
noun
0
1
Anonymous.
abbreviation
0
1
To do with time; Each, per, in, on, by. [First attested before 1150]

I brush my teeth twice a day.

preposition
0
1
To do with status; In. [First attested before 1150]
preposition
0
1
(archaic) To do with process, with a passive verb; In the course of, experiencing. [First attested before 1150]
preposition
0
1
(archaic) To do with an action, an active verb; Engaged in. [16th century]
preposition
0
1
(archaic) To do with an action/movement; To, into. [16th century]
preposition
0
1
1874 Thomas Hardy, Far from the Madding Crowd (Barnes & Noble Classics reprint [reset], 2005, chapter 5, page 117; from "Hardy's 1912 Wessex edition").

"And how Farmer James would cuss, and call thee a fool, wouldn't he, Joseph, when 'a seed his name looking so inside-out-like?" continued Matthew Moon, with feeling. / "Ay — 'a would," said Joseph meekly.

pronoun
0
1
from A to Z
  • Completely; thoroughly.
idiom
0
0
from A to Z
  • From beginning to end; completely; exhaustively.
idiom
0
0

Idioms and Phrasal Verbs

Origin of a

  • weakened form of OE an, on, in, on
    From Webster's New World College Dictionary, 5th Edition
  • Middle English from Old English from an on on
    From American Heritage Dictionary of the English Language, 5th Edition
  • Middle English alteration of haven to have have
    From American Heritage Dictionary of the English Language, 5th Edition
  • Middle English variant of an an an1
    From American Heritage Dictionary of the English Language, 5th Edition
  • Middle English from Old English an in on
    From American Heritage Dictionary of the English Language, 5th Edition
  • Greek ne in Indo-European roots
    From American Heritage Dictionary of the English Language, 5th Edition
  • Sometimes borrowed from French à (“(various prepositions)”), as in vis-à-vis, sometimes reduced from of. Other words may be established on these models, as in jack-a-napes. May be spelled differently, with same schwa pronunciation, as in o' or Cockney (from Cockeney); other early form in ragamuffin and cock-a-leekie.
    From Wiktionary
  • (she): From Middle English a, ha, unstressed variant of heo, hie, hi, from Old English hēo, hīo, feminine of (“he”).
    From Wiktionary
  • (they): From Middle English a, ha, unstressed variant of hie, hi, from Old English hīe, plural of (“he”).
    From Wiktionary
  • From the homographic case endings of the nominative, accusative, and vocative forms of numerous Latin neuter second declension nouns.
    From Wiktionary
  • (it): From Middle English a, ha, unstressed variant of he, heo, from Old English hit (“it”).
    From Wiktionary
  • Middle English, from Old English ān (“one, a, lone, sole”). The "n" was gradually lost before consonants in almost all dialects by the 15th century.
    From Wiktionary
  • Possibly due to the propensity in some non-rhotic dialects to pronounce words ending in -er as if they ended in an -a.
    From Wiktionary
  • (he): From Middle English a, ha (“he”), unstressed variant of he, from Old English .
    From Wiktionary
  • From Middle English and Old English lower case letter a and split of Middle English and Old English lower case letter æ.
    From Wiktionary
  • From Middle English and Old English upper case letter A and split of Middle English and Old English upper case letter Æ.
    From Wiktionary
  • From Middle English a, o, from Old English a-, an, on.
    From Wiktionary
  • Representing the nominative singular case ending of Latin first-declension feminine nouns.
    From Wiktionary
  • (highest rank, grade, music): From the initial position of the letter A in the English alphabet.
    From Wiktionary
  • From Middle English a, ha contraction of have, or haven
    From Wiktionary
  • Representing Italian, Portuguese, and Spanish feminine nouns.
    From Wiktionary
  • Various, often difficult to determine. Used in Middle English since 14th century.
    From Wiktionary
  • From Middle English (Northern dialect) aw, alteration of all.
    From Wiktionary
  • (vehicle-distinguishing signs): From Australia
    From Wiktionary
  • Added to lines of poetry and verse to maintain metrics.
    From Wiktionary
  • (I): From Middle English variant of the word I.
    From Wiktionary
  • From Middle English, contraction of of.
    From Wiktionary
  • Shortened version of preposition of.
    From Wiktionary
  • Shortened version of verb have.
    From Wiktionary
  • Unstressed form of on.
    From Wiktionary
  • Shortened version of verb to.
    From Wiktionary
  • (blood type): From A antigen
    From Wiktionary
  • Variant spelling of ah.
    From Wiktionary
  • From Latin -a.
    From Wiktionary
  • The vowel of rat
    From Wiktionary