Medical Dictionary

affinity

noun af·fin·i·ty \ə-ˈfin-ət-ē\
plural af·fin·i·ties

Medical Definition of AFFINITY

1
:  an attractive force between substances or particles that causes them to enter into and remain in chemical combination
2
:  a relation between biological groups involving resemblance in structural plan and indicating a common origin
May 30, 2015
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