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Meaning of audion tube | Babel Free

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 also

audiopathy audiophile audiophilia audiophobia audiophool audiospectrogram