Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
thermionic vacuum tube | Yes | No | No | No |
acorn tube | Yes | No | No | No |
thermionic vacuum tube (noun) | acorn tube (noun) |
---|---|
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | a small vacuum tube; used at high frequencies |