deep sleep

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deep sleep

noun deep sleeps

countable, uncountable Used other than figuratively or idiomatically: see deep, sleep.
countable, uncountable stage 3 of non-rapid eye movement sleep
Similar: slow-wave sleep, cataphor
countable, rare, uncountable Artificially induced hibernation in humans for the purpose of long distance space travel. Donnchadh and Gwalcmai, along with the other fourteen teams selected for planetary infiltration, had been put into deep sleep shortly after liftoff from their planet.

Translations

Every language

noun medicine: state of sleep

Español	sueño pesado, dormición profunda
Français	sommeil profond
Deutsch	Tiefschlaf
Tiếng Việt	ngủ sâu
العربية	نَوْم عَمِيق nawm ʕamīq

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MLA

"deep sleep." Wiktionary, via Micwyn, micwyn.com/word/deep%20sleep. Accessed 6 Nov. 2026.

APA

deep sleep. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/deep%20sleep

Chicago

"deep sleep." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/deep%20sleep.

BibTeX

@misc{deep_sleep_2026,
  title = {deep sleep},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/deep%20sleep},
  urldate = {2026-11-06}
}