Medical Dictionary

differentia

noun dif·fer·en·tia \ˌdif-ə-ˈren-ch(ē-)ə\
plural dif·fer·en·ti·ae \-chē-ˌē, -chē-ˌī\

Medical Definition of DIFFERENTIA

:  the element, feature, or factor that distinguishes one entity, state, or class from another; especially :  a characteristic trait distinguishing a species from other species of the same genus

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