Emission - Definition
emission
n 1: the act of emitting; causing to flow forth [syn:
emission, emanation]
2: a substance that is emitted or released [syn: discharge,
emission]
3: the release of electrons from parent atoms
4: any of several bodily processes by which substances go out of
the body; "the discharge of pus" [syn: discharge,
emission, expelling]
5: the occurrence of a flow of water (as from a pipe)