deep sleep

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{&lit|en|deep|sleep}}
2. {{lb|en|medicine}} stage 3 of non-[[rapid eye movement]] sleep
3. {{lb|en|rare|fiction}} Artificially induced [[hibernation]] in humans for the purpose of long distance space travel.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.