hibernation
hi·ber·na·tion
noun
2.
cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals
3.
the act of retiring into inactivity
- “he emerged from his hibernation to make his first appearance in several years”
Origin
From Latin hībernātus, from hībernō, from hībernus (“wintry, of or pertaining to winter”).
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.