'Fractionate' definitions:

Definition of 'fractionate'

From: WordNet
verb
Separate into constituents or fractions containing concentrated constituents
verb
Obtain by a fractional process

Definition of 'Fractionate'

From: GCIDE
  • Fractionate \Frac"tion*ate\, v. t. To separate (a mixture of chemical substances) into different portions or fractions, as in the distillation of liquids. [1913 Webster]