Eighteen Definition
ā-tēn
noun
The cardinal number between seventeen and nineteen; 18; XVIII.
Webster's New World
The 18th in a set or sequence.
American Heritage
Other Word Forms of Eighteen
Noun
Singular:
eighteen
Plural:
eighteensOrigin of Eighteen
-
Middle English eightetene from Old English eahtatēne oktō(u) in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
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