n. (pl.-na ) ear-drum; Archtitecture, triangular face of pediment; space within arch. tympanal, tympanic, a.tympani, n.pl. (sing.-no) timpani. tympaniform, a. like a tympanum. tympanist, n. timpanist. tympanites, n. distention of abdomen by flatulence. tympanitisn. inflammation of the tympanum. tympany, n. inflation; turgidity.