Top definition
glassFETsex (-1.290)
Facetious term for a vacuum tube. The term is a parody of "MOSFET" (Metal Oxide Semiconductor Field Effect Transistor), and is used jovially by vacuum tube enthusiasts.

See also: hollow state
This transmitting station uses state-of-the-art glassFET amplifiers.
by Rexar February 15, 2006
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