Cytoplasm \Cy"to*plasm\ (s?"t?-pl?z'm), n. [Gr. ky`tos hollow vessel + ???? a mold.] (Biol.) The substance of the body of a cell, as distinguished from the {karyoplasma}, or substance of the nucleus. -- {Cy`to*plas"mic} (-pl?z"m?k), a. [1913 Webster]