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