Onto

adjective

/ˈɒn.tuː/

Word Frequency: 35.8

Definitions

1.adjective(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."

2.prepositionUpon; on top of.

"My cat just jumped onto the keyboard."

3.prepositionAware of.

"The thought-police were onto my plans of world domination."

4.prepositionBeing 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."

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