[{"word":"onto","phonetic":"/ˈɒn.tuː/","phonetics":[{"text":"/ˈɒn.tuː/","audio":""},{"text":"/ˈɑn.tu/","audio":""}],"meanings":[{"partOfSpeech":"adjective","definitions":[{"definition":"(of a function) Assuming each of the values in its codomain; having its range equal to its codomain.","synonyms":[],"antonyms":[],"example":"Considered as a function on the real numbers, the exponential function is not onto."}],"synonyms":["surjective"],"antonyms":[]},{"partOfSpeech":"preposition","definitions":[{"definition":"Upon; on top of.","synonyms":[],"antonyms":[],"example":"My cat just jumped onto the keyboard."},{"definition":"Aware of.","synonyms":[],"antonyms":[],"example":"The thought-police were onto my plans of world domination."},{"definition":"Being an onto function with a codomain of (see below).","synonyms":[],"antonyms":[],"example":"The exponential function maps the set of real numbers onto the set of positive real numbers."}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/onto"]}]