noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   the ejection of electrons from the surface of a solid by incident electromagnetic radiation
2. 2
   an emission of photoelectrons (especially from a metallic surface) wordnet

Synonyms

All synonyms

anode rayaudio signalbeamcanal raycathode glowcathode ray

Etymology

From photo- + emission.