onto

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See also ónto

Contents

English [edit]

Preposition [edit]

onto

  1. Upon; on top of.
    My cat just jumped onto the keyboard.
  2. (informal) Aware of.
    The thought-police were onto my plans of World domination.
  3. (mathematics) Being an onto function with a codomain of (see below).
    The exponential function maps the set of real numbers onto the set of positive real numbers.

Adjective [edit]

onto (not comparable)

  1. (mathematics, of a function) Assuming each of the values in its codomain; having its range equal to its codomain.
    Considered as a function on the real numbers, the exponential function is not onto.

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Anagrams [edit]