v. t.
The word then was differentiated into the two forms then and than. Earle. [ 1913 Webster ]
Two or more of the forms assumed by the same original word become differentiated in signification. Dr. Murray. [ 1913 Webster ]
v. i. (Biol.) To acquire a distinct and separate character. Huxley. [ 1913 Webster ]
adj.
a. Not differentiated; specifically (Biol.), homogenous, or nearly so; -- said especially of young or embryonic tissues which have not yet undergone differentiation (see Differentiation, 3), that is, which show no visible separation into their different structural parts. [ 1913 Webster ]