The Collaborative International Dictionary
Plasmogen
Plasmogen \Plas"mo*gen\, n. [Plasma + -gen.] (Biol.) The important living portion of protoplasm, considered a chemical substance of the highest elaboration. Germ plasm and idioplasm are forms of plasmogen.
Wiktionary
plasmogen
n. (context biochemistry English) The important living portion of protoplasm, considered a chemical substance of the highest elaboration.