an apparatus, device, or person that performs fractionation; in chemistry, typically a distillation column or similar equipment that separates mixtures.
From fractionate + -or (agent suffix meaning 'one who does'). The -or ending designates the tool or person that performs the action of fractionating.
Industrial fractionators are engineering marvels—some oil refinery fractionating columns are 100+ feet tall and can process thousands of barrels per day while maintaining precise temperature zones.
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