Liberal Dictionary English Dictionary
noun Grammar.
- an article, as English a, an, that denotes class membership of the noun it modifies without particularizing it.
noun
- grammar a determiner that expresses nonspecificity of reference, such as a, an, or someCompare definite article
The word a or an introducing an unspecified noun or the name of a general category: “a dog,” “an apple,” “an orange.” An is used when the next word begins with a vowel or a silent (unpronounced) h, as in “an egg” or “an hour.”