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Definition of Dizygotic twin

Dizygotic twin: A twins who have shared a common uterine environment with its twin but is due to a different fertilized ovum.

Dizygotic twins are also called fraternal twins.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=3086
Last Editorial Review: 6/14/2012

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