D defs.my
Entry 2 senses Webster, 1913

Emission

/ĭm-ĭsh'-ən/ · E·mis·sion · IPA /ɪˈmɪʃən/
01 n. 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; th…
  1. 1.
    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 emission of bank notes.
  2. 2.
    That which is sent out, issued, or put in circulation at one time; issue; as, the emission was mostly blood.
Phrases & compounds
Emission theory — the theory of Newton, regarding light as consisting of emitted particles or corpuscles. See Corpuscular theory, under Corpuscular.