cryophilic

American  

[krahy-oh-fil-ik] / ˌkraɪ oʊˈfɪl ɪk /

adjective

1. preferring or thriving at low temperatures.

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cryophilic British  

/ ˌkraɪəˈfɪlɪk /

adjective

1. biology able to thrive at low temperatures

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Etymology

Origin of cryophilic

First recorded in 1940–45; cryo- + -philic

Explanation

The word cryophilic describes living things that thrive in extremely cold conditions. Cryophilic organisms include species of bacteria found in icy glaciers and tiny, shrimplike krill that spend their lives swimming in Arctic and Antarctic waters. The word cryophilic comes from the Greek roots cryo, meaning "cold," and -philic meaning "loving, or having an affinity for." Cryophilic species are found in extreme environments, from icy ocean depths to the polar ice caps, where most life would struggle to survive. These organisms have special adaptations, like antifreeze proteins, that allow them to function and survive in subzero temperatures. By studying cryophilic life, scientists can better understand Earth's ecosystems and explore possibilities for life in similarly cold places beyond our planet.