A

名词 n. 形容词 adj. 符号 数词 num. 字符
中文释义
英 /eɪ̯/    美 /eɪ̯/|/æɪ/

英文释义

名词 n.
  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
形容词 adj.
  1. Atom; atomic.
符号
  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.
  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
    — Hester Prynne, the historical character in The Scarlet Letter, was exposed and convicted by neighborhood gossip. [...] Gossip continues to brand some young ladies in small towns with this symbolic letter, but in our larger cities one rarely sees young ladies branded with an "A".
  8. Allele dominant.
  9. Alternative spelling of A.M. and AM (“ante meridiem”). US,alt-of,alternative
数词 num.
  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".
字符
  1. The first letter of the English alphabet, called a and written in the Latin script. letter,uppercase
    — Apple starts with A.

词形变化

a lowercase As plural A's plural · alternative a lowercase As plural A's plural · alternative

词汇关系

衍生词
A1 AA AAA A cup A game A-game A level A-list A team double A grade A triple A

词源

词源 1
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.
词源 2
* (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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