Medical Dictionary

vacuum tube

noun

Medical Definition of VACUUM TUBE

:  an electronic device in which conduction by electrons takes place through a vacuum within a sealed glass or metal container and which has various uses based on the controlled flow of electrons
April 21, 2015
omnipotent Hear it
having unlimited authority or influence
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears