\Cy"ma\ (s[imac]"m[.a]) n. [NL., fr. Gr. ky^ma. See {Cyme}]
1. (Arch.) A member or molding of the cornice, the profile of
   which is wavelike in form.

2. (Bot.) A cyme. See {Cyme}.

{Cyma recta}, or {Cyma}, a cyma, hollow in its upper part and
   swelling below.

{Cyma reversa}, or {Ogee}, a cyma swelling out on the upper
   part and hollow below.