HomeServicesBlogDictionariesContactSpanish Course
Home › Dictionary › English › audion tube
Back to search

audion tube

Noun CEFR B2

Definitions

An electronic amplifier device invented in 1906, the forerunner of the triode.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

audiopathy audiophile audiophilia audiophobia audiophool audiospectrogram

Learn this word in context

See audion tube used in real conversations inside our free language course.

Start Free Course

Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free