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strep

American  
[strep] / strɛp /

adjective

  1. streptococcal.

strep British  
/ strɛp /

noun

  1. informal short for streptococcus

"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

Etymology

Origin of strep

First recorded in 1930–35; by shortening

Explanation

Strep is a bacterium that can make you sick. If your throat is really sore and you're feeling feverish, you just might have strep throat — a condition caused by the strep bacterium. Strep is short for streptococcus, and because it's a bacterium, it can usually be treated with antibiotics. As a noun, the word refers to the microorganism itself, and when strep is an adjective, it describes conditions that are caused by the bacteria, like strep throat or strep pneumonia. An Austrian doctor coined the word streptococcus in the 1870s, from strepto-, "twisted" in Latin, and cocco-, "seed."

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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.

"If you see spots at the back of your throat, that's definitely a sign that you've got strep throat and you might need some antibiotics," she adds.

From BBC • Oct. 4, 2025

The first hospital diagnosed her with strep throat without investigating her sharp abdominal cramps.

From Salon • Nov. 1, 2024

A nurse practitioner ordered a test for strep throat, which came back positive, medical records show.

From Salon • Nov. 1, 2024

The British rock icon Rod Stewart canceled the planned 200th show of his long-running Las Vegas residency, citing strep throat.

From Los Angeles Times • Aug. 8, 2024

Sore throats this severe were usually caused by strep bacteria or the mono virus, she said.

From "Educated" by Tara Westover

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