eighteen
UK /ˈeɪ.tiːn/ · US /ˈeɪ(t).tin/ numeral, proper noun
Forms XVIII
- numeral The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.
- proper noun A surname.
Synonyms
Etymology
From Middle English eightetene, eiȝtene, ehtetene, from Old English eahtatīene, eahtatēne, from Proto-Germanic *ahtōutehun. Cognate with West Frisian achttjin, Dutch achttien, German achtzehn, Danish atten.
Equivalent to eight + -teen.
Derived from place names such as Ayton, Eaton, and Eton.
Webster’s 1913
- adjective Eight and ten; as, eighteen pounds.
- noun The number greater by a unit than seventeen; eighteen units or objects.
- noun A symbol denoting eighteen units, as 18 or xviii.
Etymology [AS. eahtat, eahtat. See Eight, and Ten, and cf. Eighty.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “eighteen”, CC BY-SA 4.0. Details