1

onto

preposition on·to \ ˈȯn-(ˌ)tü , ˈän- \

Definition of onto

1 : to a position on
  • We climbed onto the roof.
  • Turn left onto Fifth Avenue.
2 : in or into a state of awareness about
  • put me onto your methods
  • was onto something that should have been pursued further
  • —Bosley Crowther
3 used as a function word to indicate a set each element of which is the image of at least one element of another set
  • a function mapping the set S onto the set T

Examples of onto in a Sentence

  1. We climbed onto the building's roof.

  2. The book fell onto the floor.

  3. The water spilled onto the floor.

  4. The cowboy leaped onto his horse.

  5. Transfer the data onto a disk.

  6. Turn left onto Third Street at the traffic light.

First Known Use of onto

1581


2

onto

adjective

Definition of onto

: mapping elements in such a way that every element in one set is the image of at least one element in another set
  • a function that is one-to-one and onto

First Known Use of onto

1942


ONTO Defined for English Language Learners

onto

preposition

Definition of onto for English Language Learners

  • : to a position that is on (something, such as a surface, area, or object)

  • : in a direction that allows you to get to or see (something)

  • —used to say that someone knows about what someone is doing or has done


ONTO Defined for Kids

onto

preposition on·to \ ˈȯn-(ˌ)tü , ˈän- \

Definition of onto for Students

: to a position on or against
  • I leaped onto the horse.

Learn More about onto


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