vacuum tube

vac·u·um tube
V v


    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [vak-yoom, -yoo-uh m, -yuh m toob, tyoob]
    • /ˈvæk yum, -yu əm, -yəm tub, tyub/
    • /ˈvæk.juːm tjuːb/
    • US Pronunciation
    • US IPA
    • [vak-yoom, -yoo-uh m, -yuh m toob, tyoob]
    • /ˈvæk yum, -yu əm, -yəm tub, tyub/

Definitions of vacuum tube words

  • noun vacuum tube Also called, especially British, vacuum valve. an electron tube from which almost all air or gas has been evacuated: formerly used extensively in radio and electronics. 1
  • noun vacuum tube a sealed glass tube with electrodes and a partial vacuum or a highly rarefied gas, used to observe the effects of a discharge of electricity passed through it. 1
  • noun vacuum tube an electron tube from which the air has been evacuated to the highest possible degree 0

Information block about the term

Origin of vacuum tube

First appearance:

before 1775
One of the 45% newest English words
First recorded in 1775-85

Historical Comparancy

Parts of speech for Vacuum tube


vacuum tube popularity

This term is known only to a narrow circle of people with rare knowledge. Only 7% of English native speakers know the meaning of this word.
According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

vacuum tube usage trend in Literature

This diagram is provided by Google Ngram Viewer

See also

Matching words

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