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单词 brumation
释义

brumationn.

Brit. /bruːˈmeɪʃn/, U.S. /bruˈmeɪʃ(ə)n/
Origin: A borrowing from Latin, combined with an English element. Etymons: Latin brūma , -ation suffix.
Etymology: < classical Latin brūma winter (see brumal adj.) + -ation suffix, after hibernation n.
A state or condition of semi-dormancy exhibited by reptiles and amphibians in response to cold weather, characterized by lethargy and a decrease in metabolic activity. Cf. aestivation n. 3.Brumation differs from hibernation in the degree of dormancy and the metabolic processes involved.
ΚΠ
1965 W. W. Mayhew in Compar. Biochem. & Physiol. 16 103 The term brumation is proposed to indicate winter dormancy in ectothermic vertebrates that demonstrate physiological changes which are independent of body temperature.
1976 Amer. Zoologist 16 731/1 A typical female [of the salamander Desmognathus ochropheus] emerged from brumation in April with reduced lipid reserves and enlarged ova.
1996 D. Wagner Boas 44/2 Brumation is more common in animals living in areas where winter temperatures do not remain below freezing.
2015 Hays (Kansas) Daily News 5 Apr. b4/5 With warmer weather, more snakes are coming out of brumation.
This entry has been updated (OED Third Edition, December 2016; most recently modified version published online December 2021).
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n.1965
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