Akademik

electron beam
noun
a group of nearly parallel lines of electromagnetic radiation
Syn: ↑beam, ↑ray
Derivationally related forms: ↑ray (for: ↑ray)
Hypernyms: ↑electromagnetic radiation, ↑electromagnetic wave, ↑nonparticulate radiation
Hyponyms: ↑cathode ray, ↑particle beam

Useful english dictionary. 2012.