[ frak-shuh-ney-shuhn ]


  1. the act or process of fractionating.
  2. the state of being fractionated.
  3. Military. the division of a missile's payload into several warheads.


/ frăk′shə-nāshən /

  1. The separation of a chemical compound into components by fractional crystallization or fractional distillation.

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Word History and Origins

Origin of fractionation1

First recorded in 1925–30; fractionate + -ion

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Example Sentences

However, we need more experimental results showing this … fractionation so we can rule in or rule out this explanation.

From Time

The readings told us the fractionation, a function of temperature, represented significant warming between 1984 and 2015 in the nautilus habitats off Ndrova Island.

This is purified by fractionation in iron stills and distillation over caustic soda.

Various methods of fractionation are similarly available, chiefly the precipitation of the intermediate 'dextrins' by alcohol.

Or the separation may be effected by a method of fractionation as described above.

This doubling or fractionation of the consciousness and personality have often been described in the case of hysterical subjects.

An improved form of apparatus for the fractionation is represented in fig. 9.


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fractionating columnfractionator