English

Noun

fractionation ‎(countable and uncountable, plural fractionations)

1. (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.

   Methane is separated from other hydrocarbons in a gas fractionation plant.

2. (cryptography) A preliminary stage of encryption that divides each plaintext symbol into several ciphertext symbols.

External links

• fractionation on Wikipedia.Wikipedia