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

  • Symbol: XVIII


Literally "two from twenty"; from duo (two) + (from) vīgintī (twenty). Compare non-subtractive form octōdecim.



duodēvīgintī (indeclinable)

  1. eighteen; 18
    • c. 52 BCE, Julius Caesar, Commentarii de Bello Gallico 2.5:
      castra in altitudinem pedum XII vallo fossaque duodeviginti pedum muniri iubet.
      He orders him to fortify a camp with a rampart twelve feet in height, and a trench eighteen feet in breadth.
    • c. 69 CE – 122 CE, Suetonius, De vita Caesarum divi Augusti 65:
      G. et L. in duodeviginti mensium spatio amisit ambos, Gaio in Lycia, Lucio Massiliae defunctis.
      He lost Gaius and Lucius within the span of eighteen months, for the former died in Lycia and the latter at Massilia.


Related terms[edit]

See also[edit]


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