control grid

English Thesaurus

1. an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube (noun.artifact)

hypernym	:	electrode,
definition	:	a conductor used to make electrical contact with some part of a circuit (noun.artifact)

part meronym	:	electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, tube, vacuum tube,
definition	:	electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope (noun.artifact)