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  • OT
    OT
    occupational therapy.
  • ot-
    ot-
    variant of oto- before a vowel.
  • o.t.
    o.t.
    abbreviation
    overtime.
  • O.T.
    O.T.
    abbreviation
    Old Testament.

OT

1 American  
  1. occupational therapy.

  2. off-topic.

  3. Old Testament.

  4. overnight telegram.

  5. overtime.


ot- 2 American  
  1. variant of oto- before a vowel.

    otalgia.


o.t. 3 American  

abbreviation

  1. overtime.


O.T. 4 American  

abbreviation

  1. Old Testament.


OT 1 British  

abbreviation

  1. occupational therapy

  2. occupational therapist

  3. Old Testament

  4. overtime

"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

ot- 2 British  

combining form

  1. a variant of oto-

    otalgia

"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 ot- mean? Ot- is a combining form used like a prefix meaning “ear.” It is often used in medical terms, especially in anatomy and pathology. Ot- comes from the Greek oûs, meaning “ear.” Related to the Greek oûs is English’s own word ear; so is the Latin word for ear, auris, which is the ultimate source of such words as aural. Learn more about oûs at our entry for otic, an adjective used in anatomy meaning “of or relating to the ear.”Ot- is a variant of oto-, which loses its -o- when combined with words or word elements beginning with vowels. Want to know more? Read our Words That Use oto- article.

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.

See Examples For:

Philadelphia Eagles: Kadyn Proctor, OT, Alabama — With Lane Johnson near the end of his career, the Eagles need to start developing a huge young successor.

From Los Angeles Times Apr. 22, 2026

My job slashed OT and now I don’t think I can manage the bills.

From MarketWatch Apr. 16, 2026

The author observes that “workers under the OT generally suffered the worst possible conditions because the agency specialized in construction,” which meant laboring outside in extreme weather, even while sick, underfed and exhausted.

From The Wall Street Journal Nov. 24, 2025

Erika Flocken, a trained physician who worked for the OT, was the head doctor at the Dachau satellite camp at Mühldorf, which the OT shared with the SS.

From The Wall Street Journal Nov. 24, 2025

An hour before OT on Thursday, I lay my sketchbook open on my desk and flip the pages, hunting for the right words and phrases to put on Jason’s cards.

From "Rules" by Cynthia Lord

It isn’t all that hard to imagine a future in which an early member of “the O.T. family”—Zion, say, or Scottie Lewis—offers Marsach a cookie with real value, such as a free-agency scoop.

From The New Yorker Jun. 19, 2019

They both appear alongside main attraction and frequent collaborator RJ on the just-released "The Ghetto," as do O.T.

From Los Angeles Times Dec. 15, 2017

His future wife, Mary, also an employee of the company, but who had not yet met O.T., watched the tragedy unfold from shore.

From Washington Times Mar. 12, 2016

In the O.T., the rebel alliance are the good guys, but in the Clone Wars, the separatists are the rebels with the droid armies.

From Slate Oct. 13, 2011

Robertson Smith, “The O.T. in the Jewish Church,” 2nd ed.,

From Jeremiah : Being The Baird Lecture for 1922 by Smith, George Adam, Sir

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