A-a Definition

letter

The first letter of the English alphabet, called a and written in the Latin script.

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noun
The name of the Latin script letter A/a.
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(military) Initialism of antiaircraft.

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Alternative form of aa.

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article
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.
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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.
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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.
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The same; one. [16th Century]
We are of a mind on matters of morals.
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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?
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preposition
(archaic) To do with position or direction; In, on, at, by, towards, onto. [First attested before 1150]
Stand a tiptoe.
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To do with separation; In, into. [First attested before 1150]
Torn a pieces.
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To do with time; Each, per, in, on, by. [First attested before 1150]
I brush my teeth twice a day.
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To do with status; In. [First attested before 1150]
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(archaic) To do with process, with a passive verb; In the course of, experiencing. [First attested before 1150]
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verb

​ (archaic or slang) Have. [between 1150 and 1350, continued in some use until 1650; used again after 1950]

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

A meaningless syllable; ah.

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adverb
(chiefly Scotland) All. [First attested from 1350 to 1470.]
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symbol
Distance from leading edge to aerodynamic center.
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Specific absorption coefficient.
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Specific rotation.
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Allele (recessive)

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abbreviation
Air-to-air.
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Achievement age.
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Alcoholics anonymous.
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Amino acid.
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adjective

(military) Initialism of antiaircraft.

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Other Word Forms of A-a

Noun

Singular:
a-a
Plural:
a-as

Origin of A-a

  • 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

  • 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 a, o, from Old English a-, an, on.

    From Wiktionary

  • From Middle English a, ha contraction of have, or haven

    From Wiktionary

  • From Middle English (Northern dialect) aw, alteration of all.

    From Wiktionary

  • From Middle English, contraction of of.

    From Wiktionary

  • Unstressed form of on.

    From Wiktionary

  • Variant spelling of ah.

    From Wiktionary

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Words Near A-a in the Dictionary