| cable railway | |
| cannula(noun, hose) | |
| capacitance(noun, electricity) | |
| capacitor(noun, electricity) | |
| capillary | |
| carry | |
| cartridge(noun, container, shell, holder) | |
| case(noun, container, holder) | |
| cask | |
| cathode-ray tube | |
| charge(noun, electricity) | |
| check | |
| choo-choo | |
| chute(noun, shaft, underground, pipe, hose) | |
| circuit(noun, electricity) | |
| cochlea | |
| cochlear | |
| cog railroad | |
| cog railway | |
| color kinescope |
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| APA | Smart Define. (2015). tube thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tube/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "tube thesaurus" https://smartdefine.org/tube/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, tube thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tube/thesaurus/synonyms>. |
| MLA | Smart Define. "tube thesaurus" 5 June 2015. Web. 28 September 2026. <https://smartdefine.org/tube/thesaurus/synonyms> |