[eɪ], (Noun)

Definitions:
- the first letter of the alphabet

- a shape like that of a capital A
(e.g: an A-shape)

- the sixth note of the diatonic scale of C major. The A above middle C is usually used as the basis for tuning and in modern music has a standard frequency of 440 Hz


Phrases:
- from A to B
- from A to Z
- plan A

Origin:

[ə], (Determiner)

Definitions:
- used when referring to someone or something for the first time in a text or conversation
(e.g: a man came out of the room)

- used to indicate membership of a class of people or things
(e.g: he is a lawyer)

- in, to, or for each; per (used when expressing rates or ratios)
(e.g: typing 60 words a minute)


Phrases:

Origin:
Middle English: weak form of Old English ān ‘one’

[eɪ], (Abbreviation)

Definitions:
- (in card games) ace
(e.g: you cash ♥AK)

- against (heading the column in a table of sports results which shows the goals or points scored against each club)

- A level

- ampere(s)

- ångstrom(s)

- attack (in designations of US aircraft types)
(e.g: an A-10)

- answer
(e.g: Q: What is a hung parliament? A: One in which no single party has an overall majority)

- (in names of sports clubs) Athletic
(e.g: Dunfermline A)

- Austria (international vehicle registration)


Phrases:

Origin:

[], (Abbreviation)

Definitions:
- (in travel timetables) arrives
(e.g: Penzance a 0915)

- (in units of measurement) atto- (10?¹⁸)

- (with reference to sporting fixtures) away
(e.g: March 15 Sheffield United (a))

- (used before a date) before
(e.g: a1200)


Phrases:

Origin:

[], (Symbol)

Definitions:
- acceleration


Phrases:

Origin: