noun

1. a green, somewhat translucent variety of chalcedony
2. the fluid part of blood, lymph, milk, or intramuscular liquid; esp., the fluid part of blood, as distinguished from the corpuscles, used for transfusions
3. protoplasm
4. 1. any highly ionized gas, as that in a glowing fluorescent lamp
   2. a unique form of matter, as in a star, consisting of highly energized, freely moving ions and electrons
5. a flat-screen, high-definition video display consisting of a grid of tiny, gas-filled fluorescent cells that emit colors of varying intensities as the gas is ionized by an electrical signal

Etymology: Ger < Gr, something molded < plassein, to form: see plastic