proof spirit



an alcoholic liquor, or mixture of alcohol and water, containing a standard amount of alcohol. In the U.S. proof spirit has a specific gravity of .93353 (containing one half of its volume of alcohol of a specific gravity of .7939 at 60° F). In Britain proof spirit has a specific gravity of .91984.

Nearby words

  1. proof,
  2. proof of concept,
  3. proof of the pudding,
  4. proof of the pudding, the,
  5. proof sheet,
  6. proof stress,
  7. proof theory,
  8. proof-of-purchase,
  9. proofing,
  10. proofread

Origin of proof spirit

First recorded in 1735–45 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for proof spirit

  • Afterwards it may be bathed with a lotion, (made of nitric acid one drachm, to proof-spirit one ounce,) and then returned.

    The Dog|Dinks, Mayhew, and Hutchinson

British Dictionary definitions for proof spirit

proof spirit


(in Britain and Canada) a mixture of alcohol and water or an alcoholic beverage that contains 49.28 per cent of alcohol by weight, 57.1 per cent by volume at 51°F: up until 1980 used as a standard of alcoholic liquids
(in the US) a similar standard mixture containing 50 per cent of alcohol by volume at 60°F
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