onto

alternative Australia Canada Commonwealth Ireland New Zealand South Africa UK including usually on to

1. Arriving upon or on top of (speaking of a physical or metaphorical movement).

   My cat just jumped onto the keyboard.

   3 more examples

   A new drug has just come onto the market.

   Private-equity nabobs bristle at being dubbed mere financiers. Piling debt onto companies’ balance-sheets is only a small part of what leveraged buy-outs are about, they insist. Improving the workings of the businesses they take over is just as core to their calling, if not more so. Much of their pleading is public-relations bluster.

   2013 June 22, “Engineers of a different kind”, in The Economist, volume 407, number 8841, page 70

   That original list of 2,315 solutions was embedded in the game’s code. That means the game was playable offline and could be downloaded onto phones or computers. The solutions to the original Wordle game were predetermined through October 20, 2027. The New York Times (NYT) hasn’t said if it plans to make any more changes or additions to that initial list.

   2022 February 15, David Goldman, “Why your Wordle answers might now be different than your friends’”, in CNN Business

   Antonyms: off, off of

2. informalAware of.

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

3. mathematicsBeing 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.

alternative Australia Canada Commonwealth Ireland New Zealand South Africa UK including usually on to

1. not comparablemathematicsAttaining each of the values in its codomain; having its image equal to its codomain.

   Considered as a function on the real numbers, the exponential function is not onto, as it never takes on values less than or equal to zero.

   Synonyms: surjective