Definition of ONTO

onto

Meanings

Prep

  • Arriving upon or on top of (speaking of a physical or metaphorical movement).
  • Aware of.
  • Being an onto function with a codomain of (see below).

Adj

  • Attaining each of the values in its codomain; having its image equal to its codomain.

Origin / Etymology

From on + to, after into. Compare Saterland Frisian antou (“up to”).

Synonyms

surjective

Antonyms

off, off of

Scrabble Score: 4

onto is a valid Scrabble (US) TWL word
onto is a valid Scrabble Word in Merriam-Webster MW Dictionary
onto is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 5

onto is a valid Words With Friends word