'Cymatium' definitions:

Definition of 'cymatium'

(from WordNet)
noun
(architecture) a molding for a cornice; in profile it is shaped like an S (partly concave and partly convex) [syn: cyma, cymatium]

Definition of 'Cymatium'

From: GCIDE
  • Cymatium \Cy*ma"ti*um\ (s?-m?"sh?-?m), n. [L., fr. Gr. ?????, dim. of ???? a wave.] (Arch.) A capping or crowning molding in classic architecture. [1913 Webster]