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Definition of Familial

Familial: A condition that tends to occur more often in family members than is expected by chance alone. A familial disease may be genetic (such as cystic fibrosis) or environmental (such as chicken pox).

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=3378
Last Editorial Review: 3/19/2012

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