- Chemistry. an apparatus for fractional distillation.Compare cracker(def 10).
- any apparatus capable of separating complex liquid substances, as blood, into their component parts.
Origin of fractionator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fractionator
He inserted half a droplet of the supposed vaccine and plugged in the fractionator's power cable.
The fractionator turned itself off and he focused on and studied the slide it yielded.