[ dek-yoo-muh n ]
/ ˈdɛk yʊ mən /


large or immense, as a wave.
(in ancient Rome) of or relating to the tenth cohort of a legion.


Also called decuman gate. (in ancient Rome) the main gate of a military camp, facing away from the enemy and near which the tenth cohort of the legion was usually stationed.

Origin of decuman

1650–60; < Latin decumānus, decimānus of the tenth, large, equivalent to decim(us) tenth (see decimate) + -ānus -an Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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