emission Definition

an act or instance of emitting : emanation

publication

a putting into circulation

the production of sound waves by a material when it is subjected to stress; also : the sound waves produced in this manner

tomography in which a cross-sectional image of regional metabolism is obtained by a usually color-coded representation of the distribution of gamma radiation given off in the collision of electrons in cells with positrons emitted by radionuclides incorporated into metabolic substances that have been administered (as by injection)

the emission of electrons from a surface that is bombarded by particles (such as electrons or ions) from a primary source

to emit (something) again