English Explanatory Dictionary

eighteenth

English dictionary entry

Meanings

adj
  1. The ordinal form of the number eighteen.
noun
  1. The person or thing in the eighteenth position.
  2. One of eighteen equal parts of a whole.
  3. A party to celebrate an eighteenth birthday.

Pronunciation

/ˌeɪˈtiːnθ/ en-us-eighteenth.ogg

Word forms

eighteenth eighteenths

Etymology

Inherited from Middle English eightetenthe, eightetethe, from Old English eahtatēoþa, from Proto-Germanic *ahtudô tehundô. Equivalent to eighteen + -th (ordinal suffix).

Synonyms

18th XVIIIth XVIII

Derived words

eighteenthly long eighteenth century
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