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Synonyms

onto

1 American  
[on-too, awn-, on-tuh, awn-] / ˈɒn tu, ˈɔn-, ˈɒn tə, ˈɔn- /

preposition

  1. to a place or position on; upon; on.

    to get onto a horse.

  2. Informal. in or into a state of awareness about.

    I'm onto your scheme.


adjective

  1. Mathematics. Also pertaining to a function or map from one set to another set, the range of which is the entire second set.

onto- 2 American  
  1. a combining form meaning “being,” used in the formation of compound words.

    ontogeny.


onto 1 British  
/ ˈɒntə, ˈɒntʊ /

preposition

  1. to a position that is on

    step onto the train as it passes

  2. having become aware of (something illicit or secret)

    the police are onto us

  3. into contact with

    get onto the factory

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

onto- 2 British  

combining form

  1. existence or being

    ontogeny

    ontology

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does onto- mean? Onto- is a combining form used like a prefix meaning “being.” It is occasionally used in technical terms, especially in philosophy.The form onto- comes from Greek ṓn, meaning “being.” The Latin equivalents are ēns, ent- and essent- “being,” which are the sources of entity and essence.What are variants of onto-?When combined with words or word elements that begin with a vowel, onto- becomes ont-, as in ontic. When used as a suffix at the end of a word, onto- becomes -ont, as in diplont. Want to know more? Read our Words That Use articles for ont- and -ont.

Etymology

Origin of onto1

First recorded in 1575–85; on + to

Origin of onto-2

< New Latin < Greek ont- (stem of ón, neuter present participle of eînai to be) + -o- -o-

Compare meaning

How does onto compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At the slightest hint that your ordeal is about to end, you immediately project all your hopes and dreams onto that illusion.

From The Wall Street Journal

But now unregulated peptides have exploded onto the wellbeing market since GLP-1s, weight loss drugs, became mainstream.

From BBC

At the Port of Houston this past week, a crane loaded trucks, generators and machinery onto the Roibeira as it prepared to set sail to Venezuela, the second vessel from the shipping company International Frontier Forwarders to head to the South American nation.

From Barron's

On a cracked two-lane road on the eastern edge of San Diego County, James Cordero eased his Jeep onto the shoulder after something caught his eye.

From Los Angeles Times

Nervous residents in Dubai’s Palm and Marina developments hurried onto their balconies to get a glimpse of the action.

From The Wall Street Journal