onto-


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Related to onto-: hold onto

onto-

(word root) being
Examples of words with the root onto-: ontogeny
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

onto-

or ont-
pref.
1. Existence; being: ontology.
2. Organism: ontogeny.

[Late Greek, from Greek ōn, ont-, present participle of einai, to be; see es- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

onto-

combining form
existence or being: ontogeny; ontology.
[from Late Greek, from ōn (stem ont-) being, present participle of einai to be]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

on•to

(ˈɒn tu, ˈɔn-; unstressed ˈɒn tə, ˈɔn-)

prep.
1. to a place or position on; upon; on.
2. Informal. aware of the true nature, motive, or meaning of: I'm onto your tricks.
adj.
3. Math. pertaining to a function or map from one set to another set, the range of which is the entire second set.
[1575–85]

onto-

a combining form meaning “being”: ontogeny.
[< New Latin < Greek]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.