70 entries under noun topic. ×
| butene | |
| butylene | |
| cyanogen | |
| ethene | |
| ethylene | |
| firedamp | |
| formaldehyde | |
| greenhouse emission | |
| greenhouse gas | |
| hydrogen | |
| ideal gas | |
| inert gas | |
| inhalant | |
| mephitis | |
| methanal | |
| methane | |
| nitric oxide | |
| nitrogen | |
| nitrogen dioxide | |
| noble gas |
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| APA | Smart Define. (2016). gas thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/gas/thesaurus/narrower |
| Chicago | Smart Define. 2016. "gas thesaurus" https://smartdefine.org/gas/thesaurus/narrower (accessed September 29, 2026). |
| Harvard | Smart Define 2016, gas thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/gas/thesaurus/narrower>. |
| MLA | Smart Define. "gas thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/gas/thesaurus/narrower> |