cryogen

noun

cryo·​gen ˈkrī-ə-jən How to pronounce cryogen (audio)
: a substance for obtaining low temperatures : refrigerant

called also cryogenic

Examples of cryogen in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Another problem is that this approach requires a complicated cryocooling system that includes pumps, seals, gaskets, pipes, insulation, a rotary coupling that transfers the cryogen into and out of the rotor, and other components that can fail and that add considerable weight. IEEE Spectrum, 26 June 2025 The two types of cryosurgery are as follows: External cryosurgery: A healthcare provider applies cryogen using a cotton swab or spray device to freeze abnormal cells.1 As the frozen tissue thaws, the cells die. Archana Sharma, Verywell Health, 24 Jan. 2025 Her head is in that cryogen chamber with Will’s brain. Ben Rosenstock, Vulture, 4 Apr. 2024

Word History

Etymology

cryo- + -gen

First Known Use

1875, in the meaning defined above

Time Traveler
The first known use of cryogen was in 1875

Browse Nearby Words

Cite this Entry

“Cryogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cryogen. Accessed 9 Sep. 2025.

Medical Definition

cryogen

noun
cryo·​gen ˈkrī-ə-jən How to pronounce cryogen (audio)
: a substance for obtaining low temperatures

called also cryogenic

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!