What do a.m. and p.m. stand for?

vacuum distillation

noun, Chemistry
a process of distillation employing a vacuum that by lowering the pressure on a liquid allows volatilization at a lower temperature than normal.
Origin of vacuum distillation
1895-1900 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for vacuum distillation
  • One of them is vacuum distillation, which dewaters the oil.
  • The facility also includes a vacuum distillation system for on-site recycling of petroleum-based parts washer solvents.
  • Re-refining distillation bottoms means the heavy fraction produced by vacuum distillation of filtered and dehydrated used oil.
  • The underflow is routed to a vacuum distillation column.
British Dictionary definitions for vacuum distillation

vacuum distillation

distillation in which the liquid distilled is enclosed at a low pressure in order to reduce its boiling point
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source

Word of the Day

Difficulty index for vacuum distillation

Few English speakers likely know this word

Word Value for vacuum

Scrabble Words With Friends