[cathode ray] n (1880) 1 pl: the high-speed electrons emitted in a stream from the heated cathode of a vacuum tube
2: a stream of electrons emitted from the cathode of a vacuum tube--usu. used in pl.
[cathode ray] n (1880) 1 pl: the high-speed electrons emitted in a stream from the heated cathode of a vacuum tube
2: a stream of electrons emitted from the cathode of a vacuum tube--usu. used in pl.
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012