I.thirteen: “tredecim captis navibus,” Liv. 36, 45, 3: “centum tredecim senatores,” Tac. H. 5, 19 fin.: “equus emptus talentis tredecim,” Gell. 5, 2, 2 (for which we have decem et tres, Cic. Rosc. Am. 7, 20: “decem tres,” Liv. 37, 30, 8: “decem tria milia,” id. 29, 2, 17; v. decem).
trĕdĕcim (tresd- , Front. Aquaed. 33), num. adj. tres-decem,