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Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Adjective

1. {{lb|en|set theory|of a [[binary relation]] <math>R</math> on <math>A \times B</math>}} Such that every [[element]] of the [[domain]] is related to at least one element of the [[codomain]]: such that <math>\forall a \in A \;\; \exists b \in B : (a,b) \in R</math>

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