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Synonyms

OTC

American  

  1. Also O.T.C. Officers' Training Corps.

  2. over-the-counter.

OTC British  

abbreviation

  1. (in Britain) Officers' Training Corps

  2. over-the-counter

  3. oxytetracycline

"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

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.

And there was: There had been some progress, with oxytetracycline, OTC for short, a powerful antibiotic that is used to treat chlamydia and sometimes syphilis in humans.

From Slate • Apr. 20, 2026

Investors in the companies’ common stock, which trades on OTC Markets, are eager for news after the administration floated the possibility of a new public offering in 2025.

From Barron's • Jan. 6, 2026

That $30 jump is likely stale OTC data updating in chunks.

From MarketWatch • Dec. 12, 2025

Dylan stays behind to initiate OTC, having experienced it himself in an earlier episode after Milchick tried to recover a stolen item from him.

From Los Angeles Times • Jan. 15, 2025

You didn't have to be a Primos fanatic, like Force, to write and execute a program on the OTC computer.

From Underground by Dreyfus, Suelette

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.