A.
The first letter of the English alphabet, called a and written in the Latin script.
Meaning & usage
The first letter of the English alphabet, called a and written in the Latin script.
Apple starts with A.
Where this word comes from
From Middle English and Old English upper case letter A and split of Middle English and Old English upper case letter Æ. * The Old English letters A and Æ replaced the Anglo-Saxon Futhorc letters ᚪ (a, “āc”) and ᚫ (æ, “æsc”), derived from the Runic letter ᚫ (a, “Ansuz”), in the 7th century.
The first numeral symbol of the English alphabet, called a and written in the Latin script.
Item A is "foods", item B is "drinks".
Where this word comes from
From Middle English and Old English upper case letter A and split of Middle English and Old English upper case letter Æ. * The Old English letters A and Æ replaced the Anglo-Saxon Futhorc letters ᚪ (a, “āc”) and ᚫ (æ, “æsc”), derived from the Runic letter ᚫ (a, “Ansuz”), in the 7th century.
A rank, normally the highest rank, on any of various scales that assign letters.
We assign each item inspected a rating from A through G, depending on various factors.
In the UK, the highest social grade is A – upper middle class.
The highest letter grade assigned (disregarding plusses and minuses).
I was so happy to get an A on that test.
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.
A blood type that has a specific antigen that aggravates the immune response in people with type B antigen in their blood. People with this blood type may receive blood from type A or type O but cannot receive blood from AB or B.
My blood type is A negative.
Mass number.
A universal affirmative suggestion.
Abbreviation of adulterer or adulteress, used as a human brand.
Allele dominant.
Alternative spelling of A.M. and AM (“ante meridiem”).
Where this word comes from
* (highest rank, grade, music): From the initial position of the letter A in the English alphabet. * (blood type): From A antigen
Ace. (including in card games)
Acre.
Adult; as used in film rating.
Ammeter.
Angstrom.
Answer.
An assist.
Asexual.
Arsehole.
Atom.
A-bomb
Where this word comes from
* (highest rank, grade, music): From the initial position of the letter A in the English alphabet. * (blood type): From A antigen
Atom; atomic.
Where this word comes from
* (highest rank, grade, music): From the initial position of the letter A in the English alphabet. * (blood type): From A antigen
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.