Synonyms|212Antonyms|2|Broader|8Narrower|2Related|71
23
gas(noun, fuel, gas)
7
element(noun, element)
4
atomic number 1
3
butane(noun, fuel, gas)
3
actinium(noun, element)
2
plutonium(noun, element)
2
selenium(noun, element)
2
silicon(noun, element)
2
tellurium(noun, element)
2
acetylene(noun, gas)
2
heavy hydrogen(expression, idiom)
2
tritium
2
water(noun, binary compound)
2
carbon dioxide
2
chemical element(expression, idiom)
2
soft
1
oxygen(noun, element, gas)
1
H
1
helium(noun, element, gas)
1
nitrogen(noun, element, gas)
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APASmart Define. (2015). hydrogen thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/hydrogen/thesaurus/synonyms
ChicagoSmart Define. 2015. "hydrogen thesaurus" https://smartdefine.org/hydrogen/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, hydrogen thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/hydrogen/thesaurus/synonyms>.
MLASmart Define. "hydrogen thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/hydrogen/thesaurus/synonyms>