E*mis"sion (?), n. [L. emissio:
cf. F. émission. See Emit.] 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. That which is sent out, issued, or put in
circulation at one time; issue; as, the emission was mostly
Emission theory (Physics), the theory
of Newton, regarding light as consisting of emitted particles
or corpuscles. See Corpuscular theory, under