tĕpĭdārĭus: a, um, adj. tepidus,I of or belonging to tepid water or to a tepid bath.I Adj.: aënum, Vitr. 5, 10: CELLA, Inscr. Orell. 3328. —II Subst.: tĕpĭdārĭum, ii, n., a tepid bathing-room, tepid bath, Cels. 1, 3; Vitr. 5, 10, §§ 1 and 5.