proper nounDĕcennŏvĭumDECENNOVIVM☆ KeepMeaningthe Pomptine MarshesLewis & Short 1879ModernAs printed, 1879DECENNOVIUMLEWIS & SHORTDECENNOVIUMDĕcennŏvĭum, ii, n. decem-novem, I. the Pomptine Marshes (19,000 feet in length), Cassiod. Var. 2, 32 sq.; Inscr. Grut. 152, 8.Read the whole entry