eighteen
SayAY-teen/ˈeɪ(t).tin/UK/ˈeɪ.tiːn/
- 1The cardinal number after seventeen and before nineteen, written 18 in Arabic numerals and XVIII in Roman numerals.
He counted eighteen geese gliding across the lake at dawn.
The recipe makes eighteen muffins, enough for the whole office to share.
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Origin
From Middle English eightetene, from Old English eahtatīene, from Proto-Germanic *ahtōutehun. It is equivalent to eight + -teen, and is related to German achtzehn, Dutch achttien, and Danish atten.