dif·fer·en·ti·ate 
(dĭf′ə-rĕnshē-āt′)
(dĭf′ə-rĕnshē-āt′)v. dif·fer·en·ti·at·ed, dif·fer·en·ti·at·ing, dif·fer·en·ti·ates
v.tr.
1. To constitute the distinction between: subspecies that are differentiated by the markings on their wings.
2. To perceive or show the difference in or between; discriminate.
3. To make different by alteration or modification.
4. Mathematics To calculate the derivative or differential of (a function).
v.intr.
1. To become distinct or specialized; acquire a different character.
2. To make distinctions; discriminate.
3. Biology To undergo differentiation.