English
fractionate
From fraction + -ate (verb-forming suffix).
Proto-Indo-European *bʰreg- ‘to break’
Medieval Latin fractio ‘a fragment, portion’
Old French fraccion
Middle English fraccioun ‘a breaking’
English fraction
Today it means
verb To separate (a mixture) into its individual constituents by exploiting differences in some chemical or physical property, such as boiling point, particle size, solubility etc.
Language periods are conventional ranges, not dates for this word.
Etymograph / fractionate