| fickle | |
| fire damp(expression, idiom, bane) | |
| fuel oil(expression, idiom, fuel) | |
| gaseous element | |
| heating oil(expression, idiom, fuel) | |
| helium balloon(expression, idiom, levity) | |
| high octane gasoline(expression, idiom, fuel) | |
| hot air balloon(expression, idiom, levity) | |
| hydrocyanic acid(expression, idiom, bane) | |
| hydrogenation | |
| kerosene | |
| lawrencium | |
| lighter-than-air balloon(expression, idiom, levity) | |
| liquid hydrogen(expression, idiom, fuel) | |
| liquid oxygen(expression, idiom, fuel) | |
| lox | |
| marsh gas(expression, idiom, bane) | |
| methanol | |
| naphtha | |
| nitromethane |
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| APA | Smart Define. (2015). hydrogen thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hydrogen/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hydrogen thesaurus" https://smartdefine.org/hydrogen/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, hydrogen thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hydrogen/thesaurus/synonyms>. |
| MLA | Smart Define. "hydrogen thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/hydrogen/thesaurus/synonyms> |