Definition & Meaning of "indefinite article"in English

What is an "indefinite article"?

An indefinite article is a type of determiner used to refer to a non-specific noun, indicating that it is one of many possible items rather than a specific one. The two indefinite articles in English are "a" and "an." "A" is used before words that begin with a consonant sound, as in "a dog," while "an" is used before words that begin with a vowel sound, as in "an apple." Indefinite articles help convey that the noun is not previously known or defined in the conversation, allowing for generalization and flexibility in language. They are essential for introducing new information about nouns in communication.