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extremophile

British  
/ ɪkˈstrɛməˌfaɪl /

noun

  1. a microbe that lives in an environment once thought to be uninhabitable, for example in boiling or frozen water

"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

extremophile Scientific  
/ ĭk-strēmə-fīl′ /
  1. An organism adapted to living in conditions of extreme temperature, pressure, or chemical concentration, as in highly acidic or salty environments. Many extremophiles are unicellular organisms known as archaea.


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.

When you can do that, you're called an extremophile.

From Salon • Apr. 20, 2025

In ACS' Journal of Proteome Research, researchers detail a method for more accurate extremophile identification based on protein fragments instead of genetic material.

From Science Daily • Mar. 15, 2024

Out of more than 1,000 different extremophile species gathered from those sites, the team managed to grow just 31 in the lab.

From Scientific American • Jul. 21, 2021

A breeding ground for extremophile bacteria, like the darkest crevices of the Mariana Trench.

From Washington Post • Jul. 25, 2020

“But it's an enzyme from an extremophile microbe that's being used in tests to diagnose COVID-19 right now.”

From Nature • Jul. 12, 2020