Synonyms|2Antonyms|0|Broader|6Narrower|0Related|2
3
thermionic vacuum tube
3
tube
2
thermionic tube
2
vacuum tube
1
electron tube
0
thermionic valve
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APASmart Define. (2013). acorn tube thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/acorn_tube/thesaurus/broader
ChicagoSmart Define. 2013. "acorn tube thesaurus" https://smartdefine.org/acorn_tube/thesaurus/broader (accessed September 30, 2026).
HarvardSmart Define 2013, acorn tube thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/acorn_tube/thesaurus/broader>.
MLASmart Define. "acorn tube thesaurus" 18 May 2013. Web. 30 September 2026. <https://smartdefine.org/acorn_tube/thesaurus/broader>