ultragaseous

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Adjective

1. Having the properties exhibited by [[gas]]es under very low [[pressure]]s (one [[millionth]] of an [[atmosphere]] or less).

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.