Noun
English Wikipedia has an article on:vacuum distillationWikipedia
vacuum distillation (countable and uncountable, plural vacuum distillations)
(chemistry) Distillation under reduced pressure, and thus at a reduced temperature with less risk of thermal degradation
A simple vacuum distillation system as exemplified above can be used, whereby the vacuum is replaced with an inert gas after the distillation is complete. Source: Internet
Cadmium is isolated from the zinc metal by vacuum distillation if the zinc is smelted, or cadmium sulfate is precipitated from the electrolysis solution. Source: Internet
Honey oil still contains waxes and essential oils and can be further purified by vacuum distillation to yield "red oil". Source: Internet
The unit process of evaporation may also be called "distillation": *In rotary evaporation a vacuum distillation apparatus is used to remove bulk solvents from a sample. Source: Internet
While vacuum distillation of ethanol is not presently economical, pressure-swing distillation is a topic of current research. Source: Internet