The Collaborative International Dictionary
Idioplasma
Idioplasma \Id`i*o*plas"ma\, n. [NL., fr. Gr. 'i`dios proper, peculiar + ? a form, mold.] (Biol.) That portion of the cell protoplasm which is the seat of all active changes, and which carries on the function of hereditary transmission; -- distinguished from the other portion, which is termed nutritive plasma. See Hygroplasm.
Wiktionary
idioplasma
n. (context biology archaic English) A portion of the cell protoplasm which is the seat of all active changes, and which carries on the function of hereditary transmission; distinguished from the other portion, which is termed ''nutritive plasma''.