Vicariance Definition

vī-kârē-əns, vĭ-
noun
The division of a widespread group of organisms by a geographic barrier, such as a mountain range or a body of water, often resulting in the evolution of related species on either side of the barrier.
American Heritage Medicine
(geology) The geological event which produces such a barrier (volcano, earthquake, etc)
Wiktionary

(psychology, colloquial) The act of experiencing an event by proxy through an empathic link with the person who is experiencing the event firsthand.

Wiktionary
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Other Word Forms of Vicariance

Noun

Singular:
vicariance
Plural:
vicariances

Origin of Vicariance

  • Latin vicārius substitute (since after a vicariant speciation event, one species can be thought of as “substituting for” a related species on the other side of the geographic barrier) vicarious –ance

    From American Heritage Dictionary of the English Language, 5th Edition

  • See vicariant.

    From Wiktionary

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