noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A ray consisting of a stream of electrons in a vacuum tube that are emitted by the cathode and accelerated towards the anode by an electric field.
2. 2
   a beam of electrons emitted by the cathode of an electrical discharge tube wordnet

Synonyms

All synonyms

actinic rayalpha radiationalpha rayanode raybecquerel raybeta radiation