cold sleep

A form of coldsleep — A deep sleep during which the body is stored at very cold temperature, to preserve it; cryogenic sleep.

Similar
suspended animation
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Meanings

nouncold sleep (uncountable)
  1. alternativeuncountableAlternative form of coldsleep.

    Half a thousand colonists had left Sol system in cold sleep, with twenty crew.

    1998 May 15, Larry Niven, Destiny's Road, →ISBN
    2 more examples

    I hesitated, then added, "I'm going to take the Long Sleep. The cold sleep—you know what I mean."

    1957, Robert A. Heinlein, The Door Into Summer, →ISBN

    Anyone who worked on cold sleep for humans would have to know about what the Lizards did so they could fly between the stars without getting old on the way.

    2004, Harry Turtledove, Homeward Bound, →ISBN

    Synonyms: suspended animation

Synonyms & antonyms

Cite this entry
APA

cold sleep. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/cold%20sleep

MLA

“cold sleep.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cold%20sleep. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “cold sleep,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/cold%20sleep.

Source: cold sleep on Wiktionary, CC BY-SA 4.0.