(chemistry) A separation process in which a certain quantity of a mixture is divided up into smaller quantities (fractions) in which the composition changes according to a gradient.

simple past tense and past participle of fraction

separated into fractions by fractionation; fractionated

In a fractional manner

present participle of fractionate

(chemistry) A piece of chemical engineering or laboratory apparatus that is used to separate the components of a mixture by fractionation, especially by fractional distillation or by chromatography.

plural of fractionator

plural of fractionation

separation into parts by fractionalizing

To separate into parts or fractions; to fractionate.