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A1

Syllabification: (A)
Pronunciation: /ā/
(also a)
Translate A | into French | into German | into Italian | into Spanish
Definition of A

noun (plural As or A's)

  • 1the first letter of the alphabet.
  • denoting the first in a set of items, categories, sizes, etc..
  • denoting the first of two or more hypothetical people or things:suppose A had killed B
  • the highest class of academic mark.
  • (a) Chess denoting the first file from the left, as viewed from white’s side of the board.
  • (usually a) the first fixed quantity in an algebraic expression.
  • (A) the human blood type (in the ABO system) containing the A agglutinogen and lacking the B.
  • 2a shape like that of a capital A: [in combination]:an A-shapeSee also A-frame, A-line.
  • 3 Music the sixth note of the diatonic scale of C major.
  • a key based on a scale with A as its keynote.

Phrases

from A to B

from one’s starting point to one’s destination:most road atlases will get you from A to B

from A to Z

over the entire range; completely:make sure you understand the subject from A to Z

plan A

one’s original plan or strategy:plan A having gone horribly wrong, Ferguson used the interval to change his formationCompare with plan B.

A in other Oxford dictionaries

Definition of A in the British & World English dictionary

Nearby words

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