acorn tube

noun Electronics.

a vacuum tube, resembling an acorn in size and shape, used chiefly in ultrahigh-frequency electronic devices.

QUIZZES

HEED THE VOX POPULI, AND TAKE THIS WORD OF THE DAY QUIZ!

Test your memory on these verbal firecrackers from the week of June 29 to July 5!
Question 1 of 7
anchorite
a granular metamorphic rock.
a person who has retired to a solitary place for a life of religious seclusion.
a hobble or fetter for a horse or other animal.
TAKE THE QUIZ TO FIND OUT

Origin of acorn tube

First recorded in 1930–35

Words nearby acorn tube

acorn chair, acorn clock, acorn spoon, acorn squash, acorn sugar, acorn tube, acorn valve, acorn worm, acosta's disease, acotyledon, acouasm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020