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saponify

[suh-pon-uh-fahy]Chemistry
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verb (used with object), sa·pon·i·fied, sa·pon·i·fy·ing.
  1. to convert (a fat) into soap by treating with an alkali.
  2. to decompose (any ester), forming the corresponding alcohol and acid or salt.
verb (used without object), sa·pon·i·fied, sa·pon·i·fy·ing.
  1. to become converted into soap.

Origin of saponify

1815–25; < Latin sāpōn- (stem of sāpō) soap + -ify
Related formssa·pon·i·fi·a·ble, adjectivesa·pon·i·fi·ca·tion, nounsa·pon·i·fi·er, nounnon·sa·pon·i·fi·a·ble, adjectivenon·sa·pon·i·fi·ca·tion, nounun·sa·pon·i·fi·a·ble, adjectiveun·sa·pon·i·fied, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for unsaponified

Historical Examples

  • Run the gasoline into a weighed dish, evaporate the alcohol, dry and weigh the residue as unsaponified matter.

    Soap-Making Manual

    E. G. Thomssen

  • The unsaponified fat of the coccus insect, as well as oleic and margaric acids.


British Dictionary definitions for unsaponified

saponify

verb -fies, -fying or -fied chem
  1. to undergo or cause to undergo a process in which a fat is converted into a soap by treatment with alkali
  2. to undergo or cause to undergo a reaction in which an ester is hydrolysed to an acid and an alcohol as a result of treatment with an alkali
Derived Formssaponifiable, adjectivesaponifier, nounsaponification, noun

Word Origin

C19: from French saponifier, from Latin sāpō soap
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

Word Origin and History for unsaponified

saponify

v.

1821, from French saponifier (see saponification). Related: Saponified; saponifying.

Online Etymology Dictionary, © 2010 Douglas Harper

unsaponified in Medicine

saponify

(sə-pŏnə-fī′)
v.
  1. To undergo saponification.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.