onto

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Preposition

1. Arriving [[upon]] or on [[top]] of (speaking of a physical or metaphorical movement).
2. {{lb|en|informal}} {{U|aware}} of.
3. {{lb|en|mathematics}} Being an onto [[function]] with a [[codomain]] of (see below).

Adjective

1. {{lb|en|mathematics|of a function}} Attaining each of the values in its [[codomain]]; having its [[image]] equal to its codomain.

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