onto

B1
Pronunciation
/ˈɒn.tuː/
/ˈɑn.tu/
Adjective
1 definition(s)
1 Definition

(of a function) Assuming each of the values in its codomain; having its range equal to its codomain.

Example Sentences
  • Considered as a function on the real numbers, the exponential function is not onto.
Preposition
3 definition(s)
1 Definition

Upon; on top of.

Example Sentences
  • My cat just jumped onto the keyboard.
2 Definition

Aware of.

Example Sentences
  • The thought-police were onto my plans of world domination.
3 Definition

Being an onto function with a codomain of (see below).

Example Sentences
  • The exponential function maps the set of real numbers onto the set of positive real numbers.