definition of
emission

[1] #1 emission n. [emanation] the act of emitting; causing to flow forth. wn

[2] #2 emission n. [discharge] a substance that is emitted or released. wn

[3] #3 emission n. the release of electrons from parent atoms. wn

[4] #4 emission n. [discharge, expelling] any of several bodily processes by which substances go out of the body; "the discharge of pus". wn

[5] #5 emission n. the occurrence of a flow of water (as from a pipe). wn