fractionation

== English == === Etymology === By surface analysis, fraction +‎ -ation, or, by surface analysis, fractionate +‎ -ion. === Noun === fractionation (countable and uncountable, plural fractionations) (chemistry, uncountable, countable) 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; an instance of this process. Hyponym: fractional distillation (radiotherapy) The division of a total dose of radiation into fractions. Hyponym: hyperfractionation (cryptography) A preliminary stage of encryption that divides each plaintext symbol into several ciphertext symbols. A form of hypnosis where the patient is made to enter and leave a trance state many times in quick succession. ==== Derived terms ==== ==== Related terms ==== fractionate fractionated hyperfractionated hyperfractionation intrafractionation ==== Translations ==== ==== Further reading ==== fractionation on Wikipedia.Wikipedia