Source : Webster's Revised Unabridged Dictionary (1913)

Cyma \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.