v.
1. tr. constitute a difference between or in.
2 tr. & (often foll. by between) intr. find differences (between); discriminate.
3 tr. & intr. make or become different in the process of growth or development (species, word-forms, etc.).
4 tr. Math. transform (a function) into its derivative.
Derivatives:
differentiation n. differentiator n.
Etymology: med.L differentiare differentiat- (as DIFFERENCE)