used when referring to someone or something for the first time in a text or conversation

a man came out of the room

it has been an honour to meet you

we need people with a knowledge of languages

used to indicate membership of a class of people or things

he is a lawyer

this car is a BMW

in, to, or for each; per (used when expressing rates or ratios)

typing 60 words a minute

a move to raise petrol prices by 3p a litre

(in travel timetables) arrives

Penzance a 0915

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

(with reference to sporting fixtures) away

March 15 Sheffield United (a)

(used before a date) before

a1200

acceleration

the first letter of the alphabet

a shape like that of a capital A

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

(in card games) ace

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)

an A-10

answer

Q: What is a hung parliament? A: One in which no single party has an overall majority

(in names of sports clubs) Athletic

Dunfermline A

Austria (international vehicle registration)

the SI base unit of electrical current