Wiktionary
fractionating column
n. (context physics chemistry English) An apparatus for the separation of the volatile components of a liquid by means of fractional distillation, sometimes accompanied by selective adsorption
Wikipedia
Fractionating column
A fractionating column or fractionation column is an essential item used in distillation of liquid mixtures so as to separate the mixture into its component parts, or fractions, based on the differences in volatilities. Fractionating columns are used in small scale laboratory distillations as well as for large-scale industrial distillations.
Usage examples of "fractionating column".
At the other end of the fractionating column the more esoteric elements gather.