Bergmann's rule

Berg·​mann's rule | \ ˈbərg-mənz, ˈberg- \

Definition of Bergmann's rule

: a statement of the principle that within a polytypic wide-ranging species of warm-blooded animals the average body size of members of each geographic race varies inversely with the mean environmental temperature

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History and Etymology for Bergmann's rule

after Karl Bergmann †1865 German biologist

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Cite this Entry

“Bergmann's rule.” Dictionary, Merriam-Webster, Accessed 10 Aug. 2020.

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