Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for an from the 1913 edition of Webster's Revised Unabridged Dictionary. Define an using one of the most comprehensive free online dictionaries on the web.
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an
Part of Speech: conjunction
Results: 2
Part of Speech: noun
1. This word is properly an adjective, but is commonly called the indefinite article. It is used before nouns of the singular number only, and signifies one, or any, but somewhat less emphatically. In such expressions as " twice an hour," " once an age," a shilling an ounce ( see 2d A, 2), it has a distributive force, and is equivalent to each, every.