vacuum tube

1 ENTRIES FOUND:
Save
vacuum tube noun
plural vacuum tubes
vacuum tube
noun
plural vacuum tubes
Learner's definition of VACUUM TUBE
[count] US
: a glass tube that was used in the past in computers, televisions, etc., to control the flow of electricity
called also (British) valve
Comments & Questions
Comments & Questions
What made you want to look up vacuum tube? Include any comments and questions you have about this word.