octodecim

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Latin

Latin numbers (edit)
 ←  17 XVIII
18 		19  → [a], [b], [c]
    Cardinal: duodēvīgintī, octōdecim
    Ordinal: duodēvīcēsimus, octōdecimus
    Distributive: duodēvīcēnus

Alternative forms

  • Symbol: XVIII

Etymology

From octō (“eight”) + decem (“ten”).

Pronunciation

Numeral

octōdecim (indeclinable)

  1. (rare) eighteen; 18

Usage notes

This form is rare, and is found primarily in bookish post-Classical Latin. The usual word for eighteen in Classical Latin is duodēvīgintī, whereas modern Romance languages descend from the form decim et octō.

Synonyms

See also

References

  • “octodecim”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • “octodecim”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • octodecim in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
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