Refine
Refine verb - To make better.
Both words in one sentence
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Huge plants (of the factory type, not the living type) constantly refine rock into gas so you don't need a space suit, but the atmosphere is still very thin and unbreathable, meaning you do need a mask.
Source: Death World
Cite this Source
Thin and Refine. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/refine/thin
Refine & Thin. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/refine/thin>.
Thin or Refine. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/refine/thin.
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