Meaning & use
hibernation
A dormant, sleep-like state that certain animals enter during winter to conserve energy.
See it in a sentence
Bears build up fat reserves in autumn to survive months of hibernation.
During hibernation, a groundhog's heart rate and body temperature both drop sharply.
A note on using this word
Hibernation refers to true winter dormancy; a similar dormant state some animals enter during summer is called estivation.
Words with a similar meaning
dormancy
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