Emission
WordNet
noun
(1) The act of emitting; causing to flow forth
(2) The occurrence of a flow of water (as from a pipe)
(3) Any of several bodily processes by which substances go out of the body
"The discharge of pus"
(4) The release of electrons from parent atoms
(5) A substance that is emitted or released
WiktionaryText
Etymology
First attested in 1607. From (also possibly influenced by ) from from + .
Noun
- Something that is emitted, especially the exhaust from a car.
- The act of sending or throwing out; the act of sending forth or putting into circulation; issue; as, the emission of light from the sun; the emission of heat from a fire; the issuing of bank notes.
- That which is sent out, issued, or put in circulation at one time; issue; as, the emission was mostly blood. Emission theory (Physics), the theory of Newton, regarding light as consisting of emitted particles or corpuscles. See Corpuscular theory, under Corpuscular.