Princeton's WordNet

1. hibernation(noun)

   the torpid or resting state in which some animals pass the winter

2. hibernation(noun)

   cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals

3. hibernation(noun)

   the act of retiring into inactivity

   "he emerged from his hibernation to make his first appearance in several years"

Wiktionary

1. hibernation(Noun)

   A state of inactivity and metabolic depression in animals during winter.

2. hibernation(Noun)

   A standby state which conserves power without losing the contents of memory.

Origin: From hibernatio.

Webster Dictionary

1. Hibernation(noun)

   the act or state of hibernating

U.S. National Library of Medicine

1. Hibernation

   The dormant state in which some warm-blooded animal species pass the winter. It is characterized by narcosis and by sharp reduction in body temperature and metabolic activity and by a depression of vital signs.

• hibernasie, winterslaapAfrikaans
• سُبات، إسْباتArabic
• зимен сънBulgarian
• hibernaçãoPortuguese (BR)
• zimní spánekCzech
• dieÜberwinterungGerman
• liggen i dvaleDanish
• χειμέρια νάρκηGreek
• hibernaciónSpanish
• talveuniEstonian
• خواب زمستانیFarsi
• talvehtiminenFinnish
• hibernationFrench
• שְׁנַת חוֹרֶףHebrew
• सुस्तHindi
• zimovanje, zimski sanCroatian
• téli álomHungarian
• hibernasiIndonesian
• vetrardvaliIcelandic
• ibernazioneItalian
• 冬眠Japanese
• 동면Korean
• žiemos miegasLithuanian
• (par dzīvnieku) ziemas guļaLatvian
• hibernasiMalay
• winterslaapDutch
• vinterdvaleNorwegian
• sen zimowyPolish
• خواب زمستانیPersian
• ژمى په استراحت تيرونه ، ژمنى خوب ( د ځينو ژووPashto
• hibernaçãoPortuguese
• hibernareRomanian
• зимняя спячкаRussian
• zimný spánokSlovak
• prezimovanjeSlovenian
• hibernacijaSerbian
• vinterdvalaSwedish
• การจำศีลThai
• kış uykusuna yatmaTurkish
• 冬眠Chinese (Trad.)
• зимова сплячкаUkrainian
• شتویّتUrdu
• sự ngủ đôngVietnamese
• 冬眠Chinese (Simp.)