(biology, archaic) Protoplasm. / A mold or matrix in which anything is cast or formed to a particular shape.

plural of plasm

(biology, dated or historical) The cytoplasm of germ cells. / Germplasm; seeds or tissues maintained for the purpose of animal or plant breeding, preservation or other research uses.

Alternative spelling of germ plasm

plural of plasma screen

plural of plasma membrane

(cytology) The semipermeable membrane that surrounds the cytoplasm of a cell.

(science fiction, weaponry) An assault rifle-styled gun that shoots plasma.

A kind of gas-discharge lamp: a clear glass container, often an orb, filled with a mixture of various noble gases at low pressure, and driven by high frequency alternating current at high voltage.

(pathology) A rare allergy to certain proteins found in human semen.