transitive set
Fetched 2026-10-26 (cache).
Datamuse reports no synonyms or antonyms for this word.
Noun
- {{lb|en|set theory}} Any [[set]] ''X'' such that for any ''x'' ∈ ''X'', if ''y'' ∈ ''x'' then ''y'' ∈ ''X''; ''equivalently'', such that if ''x'' ∈ ''X'' and ''x'' is not an [[urelement]] then ''x'' ⊆ ''X''.
Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.