emission

noun

1. the act of emitting; causing to flow forth

   noun.act

   Synonyms emanation

   Source: WordNet 3.0

2. a substance that is emitted or released

   noun.substance

   Synonyms discharge

   Source: WordNet 3.0

3. the release of electrons from parent atoms

   noun.process

   Source: WordNet 3.0

4. any of several bodily processes by which substances go out of the body

   noun.process

   Synonyms discharge expelling

   Source: WordNet 3.0

5. the occurrence of a flow of water (as from a pipe)

   noun.event

   Source: WordNet 3.0

6. The act of sending or throwing out; the act of sending forth or putting into circulation; issue; as, the <i>emission</i> of light from the sun; the <i>emission</i> of heat from a fire; the <i>emission</i> of bank notes.

   noun

   Source: webster1913