ultravacuum

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. A nearly perfect [[vacuum]]; i.e. an almost or fully [[complete]] absence of [[matter]], [[especially]] a [[gas]] at very low [[pressure]].

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