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Collins Concise English Dictionary © HarperCollins Publishers:: onto- combining form - existence or being: ontogeny, ontology
Etymology: from Late Greek, from ōn (stem ont-) being, present participle of einai to be on•to /ˈɑntu, ˈɔn-; unstressed ˈɑntə, ˈɔn-/USA pronunciation prep. - to a place or position on;
upon;
on:They pulled him onto his feet. - Informal Termsaware of the true nature, motive, or meaning of:I'm onto your tricks.
WordReference Random House Unabridged Dictionary of American English © 2024on•to (on′to̅o̅, ôn′-; unstressed on′tə, ôn′-),USA pronunciation prep. - to a place or position on;
upon;
on:to get onto a horse. - Informal Termsin or into a state of awareness about:I'm onto your scheme.
adj. - MathematicsAlso, surjective. pertaining to a function or map from one set to another set, the range of which is the entire second set.
onto-, - a combining form meaning "being,'' used in the formation of compound words:ontogeny.
- Greek ont- (stem of ón, neuter present participle of eînai to be) + -o- -o-
- Neo-Latin
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