| acetylene(noun, gas) | |
| ammonia(noun, gas) | |
| argon(noun, gas) | |
| atmosphere(noun, gas) | |
| baptism(noun, refinement, distillation, freeing, cleansing) | |
| bathing(noun, refinement, distillation, freeing, cleansing) | |
| butane(noun, gas) | |
| catharsis(noun, refinement, distillation, freeing, cleansing) | |
| chlorine(noun, gas) | |
| cleansing(noun, refinement, distillation, freeing, cleaning) | |
| depuration(noun, grace, refinement, purge, distillation) | |
| diastole | |
| dilution | |
| disinfection(noun, refinement, distillation, freeing, cleansing) | |
| distension | |
| distillation(noun, grace, refinement, purge, freeing) | |
| dropsy | |
| emptiness(noun, void) | |
| ethane(noun, gas) | |
| ether(noun, gas) |
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| APA | Smart Define. (2015). rarefaction thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rarefaction/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rarefaction thesaurus" https://smartdefine.org/rarefaction/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, rarefaction thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rarefaction/thesaurus/synonyms>. |
| MLA | Smart Define. "rarefaction thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/rarefaction/thesaurus/synonyms> |