Dictionary > English Dictionary > Definition, synonym and antonym of onto
Meaning of onto by Wiktionary Dictionary

onto


    Preposition

    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

    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 .

    Synonyms

    Derived terms

    See also

    • ( mathematics ): one-to-one, injective, bijective

    Anagrams

    • noot, toon, Toon

    on to

    By Wiktionary ( 2009/11/28 11:35 UTC Version )

    Preposition

    on to

    1. Used to indicate, or signpost, logical progression to a new topic in a talk or discourse .
      Now. On to the system of active water uptake .
      Let's go on to item 3 in the list .

    Anagrams

    • noot,
    • toon, Toon

    onto-

    By Wiktionary ( 2011/06/12 00:47 UTC Version )

    Etymology

    from Ancient Greek ὤν ( ōn ) present participle of εἰμί ( eimi, “I am” )

    Preposition

    onto-

    1. being

    Derived terms

    Related terms




Definition of onto by GCIDE Dictionary

onto


  1. Onto prep. [On + to. Cf. Into.] On the top of; upon; on. See On to, under On, prep.