[frak-shuh-ney-shuh n]

Origin of fractionation

First recorded in 1925–30; fractionate + -ion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fractionation

Historical Examples of fractionation

fractionation in Medicine


  1. The process of dividing or separating into parts; breaking up.
  2. The division of a total therapeutic dose of radiation into small doses to be administered over a period of days or weeks.
  3. The separation of a chemical compound into components, as by distillation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

fractionation in Science


  1. The separation of a chemical compound into components by fractional crystallization or fractional distillation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.