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ENGLISH · A WORD WITH POSSIBILITIES

A.

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

1 character1 syllables approx.English language

Meaning & usage

character/eɪ̯/General-American, Received-Pronunciation/æɪ/Australia/eː/South-Asia
  1. The first letter of the English alphabet, called a and written in the Latin script.

    letter · uppercase
    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.

num/eɪ̯/General-American, Received-Pronunciation/æɪ/Australia/eː/South-Asia
  1. The first numeral symbol of the English alphabet, called a and written in the Latin script.

    uppercase
    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.

symbol
  1. 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.
  2. The highest letter grade assigned (disregarding plusses and minuses).

    I was so happy to get an A on that test.
  3. 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.
  4. 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.
  5. Mass number.

  6. A universal affirmative suggestion.

  7. Abbreviation of adulterer or adulteress, used as a human brand.

    abbreviation · alt-of · historical
  8. Allele dominant.

  9. Alternative spelling of A.M. and AM (“ante meridiem”).

    US · alt-of · alternative
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

noun
  1. Ace. (including in card games)

  2. Acre.

  3. Adult; as used in film rating.

  4. Ammeter.

  5. Angstrom.

    nonstandard
  6. Answer.

  7. An assist.

  8. Asexual.

  9. Arsehole.

    London · UK
  10. 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

adj
  1. 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.