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Definition of Vicariance
1. Noun. (biology) The separation of a group of organisms by a geographic barrier, resulting in differentiation of the original group into new varieties or species ¹
2. Noun. (geology) The geological event which produces such a barrier (volcano, earthquake, etc) ¹
3. Noun. (context: psychology colloquial) The act of experiencing an event by proxy through an empathic link with the person who is experiencing the event firsthand. ¹
¹ Source: wiktionary.com
Definition of Vicariance
1. [n -S]