| selenium(noun, element) | |
| silicon(noun, element) | |
| tellurium(noun, element) | |
| acetylene(noun, gas) | |
| actinium(noun, element) | |
| aluminum(noun, element) | |
| americium(noun, element) | |
| antimony(noun, element) | |
| atmosphere(noun, gas) | |
| barium(noun, element) | |
| lithium(noun, element) | |
| agent | |
| ar | |
| atomic number(expression, idiom) | |
| balloon gas | |
| basis | |
| blimp filler | |
| blocks of ice(expression, idiom, refrigerator) | |
| chemical element he(expression, idiom) | |
| chipped ice(expression, idiom, refrigerator) |
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| APA | Smart Define. (2015). helium thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/helium/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "helium thesaurus" https://smartdefine.org/helium/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, helium thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/helium/thesaurus/synonyms>. |
| MLA | Smart Define. "helium thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/helium/thesaurus/synonyms> |