Definition of Allen's rule in English:

Allen's rule

noun ˈalənz ˌruːl

Zoology

An empirical rule according to which the appendages of a warm-blooded animal are smaller in populations occupying the cooler parts of its geographical range.

Origin

1930s; earliest use found in Warder Clyde Allee (1885–1955). From the genitive of the name of Joel A. Allen, United States zoologist, who first formulated the rule in 1877 (Radical Rev. 1 116) + rule.

Definition of Allen's rule in US English:

Allen's rule

nounˈalənz ˌruːl

Zoology

An empirical rule according to which the appendages of a warm-blooded animal are smaller in populations occupying the cooler parts of its geographical range.

Origin

1930s; earliest use found in Warder Clyde Allee (1885–1955). From the genitive of the name of Joel A. Allen, United States zoologist, who first formulated the rule in 1877 ( Radical Rev 1 116) + rule.

词汇	Allen's rule
释义	Definition of Allen's rule in English: Allen's rule noun ˈalənz ˌruːl Zoology An empirical rule according to which the appendages of a warm-blooded animal are smaller in populations occupying the cooler parts of its geographical range. Origin 1930s; earliest use found in Warder Clyde Allee (1885–1955). From the genitive of the name of Joel A. Allen, United States zoologist, who first formulated the rule in 1877 (Radical Rev. 1 116) + rule. Definition of Allen's rule in US English: Allen's rule nounˈalənz ˌruːl Zoology An empirical rule according to which the appendages of a warm-blooded animal are smaller in populations occupying the cooler parts of its geographical range. Origin 1930s; earliest use found in Warder Clyde Allee (1885–1955). From the genitive of the name of Joel A. Allen, United States zoologist, who first formulated the rule in 1877 ( Radical Rev 1 116) + rule.
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