proper nounTrĭmontĭumTRIMONTIVM☆ KeepMeaninga later name of the city Philippopolis in ThraceLewis & Short 1879ModernAs printed, 1879TRIMONTIUMLEWIS & SHORTTRIMONTIUMTrĭmontĭum, ii, n., I. a later name of the city Philippopolis in Thrace, Plin. 4, 11, 18, § 41.Read the whole entry