Something which is emitted or sent out; issue. / The act of emitting; the act of sending forth or putting into circulation.

plural of emission

(physics) The energy-emitting propensity of a surface, usually measured at a specific wavelength.

Of, pertaining to, or having the capacity to emit radiation or matter; emitting

plural of emissivity

A spectral line resulting from the emission of electromagnetic radiation from an atom or other species as it decays from an excited state to one of lower energy.

(physics) A form of radioactivity in which alpha particles are emitted from the nucleus of an atom

plural of night emission

An ejaculation or orgasm while asleep, often accompanied by an erotic dream.

plural of nocturnal emission