- 1used 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 honor to have you we need people with a knowledge of languagesCompare with the.
Middle English: weak form of Old English ān 'one'
1 The article a can be pronounced either /ā/, when stressed (“He gave you a flower?”—that is, only one flower), or /ə/, when unstressed (“He gave you a flower?”—that is, the emphasis is on flower, not on the number of flowers). The form an is used before words beginning with a vowel sound. 2 On the question of using a or an before words beginning with h, see also an (usage).