A meaning

ā
Frequency:
A is the first letter in the English alphabet.

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

noun
51
17
The best or highest in quality or rank.

Grade A milk.

noun
34
14
The first letter of the modern English alphabet.
noun
31
20
Any of the speech sounds represented by the letter a.
noun
27
17
The first in a series.
noun
25
18
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Accusative.
abbreviation
15
2
Any.

Not a drop to drink.

indefinite article
15
3
Something shaped like the letter A.
noun
14
5
Acre.
abbreviation
12
1
Angstrom.
abbreviation
12
2
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Answer.
abbreviation
9
2
One; one sort of.

We planted a tree.

adjective
9
2
Area.
abbreviation
8
2
(latin) Ante (before)
abbreviation
8
2
Adjective.
abbreviation
7
2
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(sports) Assist.
abbreviation
7
3
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
6
2
Without; not.

Amoral.

prefix
6
2
To each; in each; for each; per.

Once a day.

preposition
6
2
Acceleration.
abbreviation
6
3
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Are (measurement)
abbreviation
6
3
(games) Ace.
abbreviation
6
3
The first letter of the English alphabet: from the Greek alpha, a borrowing from the Phoenician.
noun
6
3
First in a sequence or group.
adjective
6
3
Shaped like A.
adjective
6
3
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Across.
abbreviation
6
5
Alto.
abbreviation
5
6
Ampere.
abbreviation
5
6
Adenine.
abbreviation
5
7
The first in a sequence or group.
noun
4
2
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An object shaped like A.
noun
3
2
Of a or A.
adjective
3
2
Each; any one [a gun is dangerous]
adjective
3
2
About.
abbreviation
3
2
(physics) Acceleration.
abbreviation
3
2
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The same.

Birds of a feather.

indefinite article
3
3
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
3
8
Atto-
abbreviation
2
1
(educ.) A grade indicating excellence.

An A in history.

noun
2
1
(weaponry) Atom; atomic.
abbreviation
2
1
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(scot.) All.
adjective
2
3
Absent.
abbreviation
2
3
Active.
abbreviation
2
3
Abbreviation of adenine , ampere , angstrom , area.
1
1
Abbreviation of <bld>angstrom</bld>
1
1
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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 ).
1
1
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.
1
1
See ampere.
1
1
The first letter of the English alphabet, called a and written in the Latin script.
letter
1
1
The name of the Latin script letter A/a.
noun
1
1
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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
1
1
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
1
1
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
1
1
The same; one. [16th Century]

We are of a mind on matters of morals.

article
1
1
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
1
1
Alternative spelling of A1.
adjective
0
0
(US, military, historical) Cox-Klemin A-1 Air Ambulance, never mass produced.
noun
0
0
(US, military) Skyraider single engine general-purpose attack aircraft.
noun
0
0
(US, military) Personnel section of an air force staff.
noun
0
0
(military) Air personnel officer.
noun
0
0
noun
0
0
Alternative form of A1.
adjective
0
0
(aviation) The Agusta A.106 prototype helicopter, that never made it past the production stage.
noun
0
0
(aviation) The Agusta A109 twin-engine utility helicopter.
noun
0
0
(US, military, historical) Fokker A-2 air ambulance, that did not see production.
noun
0
0
(military) Intelligence section of an air force staff.
noun
0
0
(military) Intelligence officer on an air force staff.
noun
0
0
Almost A-1 in quality; rated just below the best.
adjective
0
0
(military) Air operations and training officer.
noun
0
0
(military) Operations and training section of an Air Force staff.
noun
0
0
(military) Sky warrior twin engine all weather attack aircraft.
noun
0
0
(military) Lansen single seat fighter craft, used from 1955-1997.
noun
0
0
(military) Skyhawk single engine attack aircraft.
noun
0
0
(military) Air material and supply officer.
noun
0
0
(military) Material and supply section of an Air Force staff.
noun
0
0
(military) The planning section of an Air Force staff.
noun
0
0
(military) Vigilante supersonic attack aircraft.
noun
0
0
(military) Intruder twin engine low-altitude attack aircraft.
noun
0
0
(military) Communications section of an Air Force staff.
noun
0
0
(military) The strike version of the Saab 105 twin-engine training aircraft, still in service.
noun
0
0
(medicine) A protein from patients with Alzheimer's.
noun
0
0
(military) Corsair single engine light attack bomber.
noun
0
0
Used before plural nouns modified by few, good many, couple, great many, etc.
article
0
1
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
0
1
(archaic) To do with position or direction; In, on, at, by, towards, onto. [First attested before 1150]

Stand a tiptoe.

preposition
0
1
To do with separation; In, into. [First attested before 1150]

Torn a pieces.

preposition
0
1
​ (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
0
1
A meaningless syllable; ah.
interjection
0
1
(archaic, slang) Of.

The name of John a Gaunt.

preposition
0
1
(chiefly Scotland) All. [First attested from 1350 to 1470.]
adverb
0
1
Distance from leading edge to aerodynamic center.
symbol
0
1
Specific absorption coefficient.
symbol
0
1
Specific rotation.
symbol
0
1
Allele (recessive)
symbol
0
1
The first letter of the English alphabet, called a and written in the Latin script.

Apple starts with A.

letter
0
1
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
0
1
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
0
1
(education) The highest letter grade assigned (disregarding plusses and minuses).

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

symbol
0
1
(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
0
1
(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
0
1
(chemistry) Mass number.
symbol
0
1
(logic) A universal affirmative suggestion.
symbol
0
1
Acoustic source.
symbol
0
1
Actual weight of an aircraft.
symbol
0
1
(historical) Adulterer, adulteress.
symbol
0
1
Alaska Steamship Company.
symbol
0
1
Alcoa Steamship Company.
symbol
0
1
Allele dominant.
symbol
0
1
Alveolar gas.
symbol
0
1
American Stock Exchange.
symbol
0
1
Ammunition examiner.
symbol
0
1
Anchor Line.
symbol
0
1
Aspect ratio.
symbol
0
1
Assembly Bill.
symbol
0
1
Smallest of the brassiere cup sizes.
symbol
0
1
Chemical activity.
symbol
0
1
First van der Waals constant.
symbol
0
1
Fraunhofer line for oxygen.
symbol
0
1
(aviation) Hail.
symbol
0
1
(in newspaper stock listings) Includes extras.
symbol
0
1
Linear acceleration.
symbol
0
1
Mean sound absorption coefficient.
symbol
0
1
Shoe size narrower than B.
symbol
0
1
(baseball) Single A league, one of the lowest professional leagues.
symbol
0
1
Total acidity.
symbol
0
1
abbreviation
0
1
abbreviation
0
1
Adult; as used in film rating.
abbreviation
0
1
abbreviation
0
1
(physics) Angstrom.
abbreviation
0
1
abbreviation
0
1
(sports) An assist.
abbreviation
0
1
(archaic) Alternative form of a (pronoun)
pronoun
0
1
(archaic) Alternative form of a (verb)
pronoun
0
1
Eye dialect spelling of have.
verb
0
1
An ASCII representation of the enclosed capital A or circle-A, Ⓐ.
symbol
0
1
Plural form of -um.
suffix
0
1
Plural form of -on.
suffix
0
1
(Geordie) Same as -er in Standard English.
suffix
0
1
(slang) Used to replace -er in nouns.
suffix
0
1
Marks singular nouns, with a foundation in Greek or Latin, often implying femininity, especially when contrasted with words terminating in -us.
suffix
0
1
Changes an element or substance into an oxide.
suffix
0
1
(slang) Alternative form of -'ve.
suffix
0
1
Marks nouns, with a foundation in Italian, Spanish, or Portuguese, implying femininity.
suffix
0
1
Added for metrical reasons to poetry and verse.
suffix
0
1
(slang) Clitic form of o'
suffix
0
1
(informal) To.

Oughta.

suffix
0
1
(slang) Australian dollar.
abbreviation
0
1
An academic grade, higher than A. Where it is used, it is often the best class of result.
noun
0
1
(computer science) A best-first graph search algorithm for finding a lowest-cost path to a goal.
noun
0
1
abbreviation
0
1
abbreviation
0
1
Absolute temperature.
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
Accusative case.
abbreviation
0
1
abbreviation
0
1
Acre; acres.

A; a.

abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
Age; aged.
abbreviation
0
1
abbreviation
0
1
Air branch.
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
(biblical) Amos, the book of.
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
Annō (in the year)
abbreviation
0
1
Annus (a year)
abbreviation
0
1
abbreviation
0
1

Ans.; ans; A.

abbreviation
0
1
Ante (before)
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
(military) Assault, as on a badge.
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
Atomic; atomic weight.
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
abbreviation
0
1
Avancé (fast)
abbreviation
0
1
Alternative form of A-.
noun
0
1
(computing) The ASCII control character start of header in caret notation.
symbol
0
1
Alternative spelling of a (all). [First attested from 1350 to 1470.]
adverb
0
1
Euphemistic spelling of ass.
noun
0
1
(metrology) Symbol for the attoohm, an SI unit of electrical resistance equal to 10−18 ohms.
symbol
0
1
(archaic) Alternative form of Aeaea.
pronoun
0
1
Used before nouns and noun phrases that denote a single but unspecified person or thing.

A region; a person.

indefinite article
0
2
In every; to each; per.

Once a month; one dollar a pound.

preposition
0
2
Have.

He'd a come if he could.

verb
0
2
(latin) Anno (in the year)
abbreviation
0
2
(latin) Annus (year)
abbreviation
0
2
Anode.
abbreviation
0
2
Anterior.
abbreviation
0
2
On; in.

Abed.

prefix
0
2
In the act of.

Aborning.

prefix
0
2
In the direction of.

Astern.

prefix
0
2
In a specified state or condition.

Abuzz.

prefix
0
2
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
2
A type or impression for a or A.
noun
0
2
Adjective.
abbreviation
0
2
Adult.
abbreviation
0
2
Alto.
abbreviation
0
2

7:00 a.

abbreviation
0
2
Anonymous.
abbreviation
0
2
Answer.
abbreviation
0
2
Are (unit of area)
abbreviation
0
2
A blood type.
noun
0
2
First-class; A 1
adjective
0
2
(physics) Absolute.
abbreviation
0
2
Adenine.
abbreviation
0
2
America(n)
abbreviation
0
2
Ampere.
abbreviation
0
2
Analog.
abbreviation
0
2
Angstrom.
abbreviation
0
2
Anode.
abbreviation
0
2
Answer.
abbreviation
0
2
April.
abbreviation
0
2
(archaic, chem.) Argon.
abbreviation
0
2
(baseball, basketball, hockey) Assist(s)
abbreviation
0
2
Attendance.
abbreviation
0
2
August.
abbreviation
0
2
In, into, on, at, to.

Ashore, abed.

affix
0
2
In the act or state of.

Asleep, a-crying, a-wishing.

affix
0
2
Up, out: now generally used as an intensive.

Awake, arise.

affix
0
2
Off, of.

Akin.

affix
0
2
Not, without.

Amoral, atypical.

affix
0
2

Avert.

affix
0
2

Ascribe.

affix
0
2
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
0
2
An Old English ligature representing a low front unrounded vowel like that in Modern English hat.
noun
0
2
A character in the International Phonetic Alphabet and some other transcription systems, representing this low front unrounded vowel.
noun
0
2
Adenine.
abbreviation
0
2
Ampere.
abbreviation
0
2
Angstrom.
abbreviation
0
2
Area.
abbreviation
0
2
To do with time; Each, per, in, on, by. [First attested before 1150]

I brush my teeth twice a day.

preposition
0
2
To do with status; In. [First attested before 1150]
preposition
0
2
(archaic) To do with process, with a passive verb; In the course of, experiencing. [First attested before 1150]
preposition
0
2
(archaic) To do with an action, an active verb; Engaged in. [16th century]
preposition
0
2
(archaic) To do with an action/movement; To, into. [16th century]
preposition
0
2
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
2
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
2
from A to Z
  • Completely; thoroughly.
idiom
0
1
from A to Z
  • from beginning to end; completely; exhaustively
idiom
0
1

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