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rancid

[ran-sid] /ˈræn sɪd/
adjective
1.
having a rank, unpleasant, stale smell or taste, as through decomposition, especially of fats or oils:
rancid butter.
2.
(of an odor or taste) rank, unpleasant, and stale:
a rancid smell.
3.
offensive or nasty; disagreeable.
Origin
1640-1650
1640-50; < Latin rancidus rank, stinking, equivalent to ranc(ēre) to be rotten + -idus -id4
Related forms
rancidly, adverb
rancidness, rancidity, noun
unrancid, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for rancidity
  • Hydrolytic rancidity was strongly correlated with esterase activity but not with oil concentration.
  • Samples will also be tested by equipment that measures color, microbial presence, and rancidity and warm over flavor.
  • Iron-hydroperoxide interactions will cause the decomposition of fatty acids leading to the development of rancidity.
  • Hydrolytic rancidity found in milk will give off an odor resembling spoiled nutmeats.
  • Induced rancidity requires that the milk undergo certain activation treatments for rancidity to develop.
  • We also found that the expeller processing helped to form natural antioxidants that inhibited rancidity.
  • It's recommended to drain the brine because salt encourages rancidity and texture changes.
  • We recommended draining the brine because salt encourages rancidity and texture changes.
  • Use of peroxide value and carbonyl value to determine the onset of rancidity in mayonnaise.
  • High temperatures can cause rancidity of oils and deterioration of vitamins.
British Dictionary definitions for rancidity

rancid

/ˈrænsɪd/
adjective
1.
(of butter, bacon, etc) having an unpleasant stale taste or smell as the result of decomposition
2.
(of a taste or smell) rank or sour; stale
Derived Forms
rancidity (rænˈsɪdɪtɪ), rancidness, noun
Word Origin
C17: from Latin rancidus rank, from rancēre to stink
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
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Word Origin and History for rancidity

rancid

adj.

1640s, from Latin rancidus "rank, stinking, offensive" (also source of Italian rancido, Spanish rancio), from rancere "be spoiled or rotten," of unknown origin. German ranzig is from French rancide. Related: Rancidness.

Online Etymology Dictionary, © 2010 Douglas Harper
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rancidity in Medicine

rancid ran·cid (rān'sĭd)
adj.
Having the disagreeable odor or taste of decomposing oils or fats.


ran·cid'i·ty or ran'cid·ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for rancidity

condition produced by aerial oxidation of unsaturated fat present in foods and other products, marked by unpleasant odour or flavour. When a fatty substance is exposed to air, its unsaturated components are converted into hydroperoxides, which break down into volatile aldehydes, esters, alcohols, ketones, and hydrocarbons, some of which have disagreeable odours. Butter becomes rancid by the foregoing process and by hydrolysis, which liberates volatile and malodorous acids, particularly butyric acid. Saturated fats such as beef tallow are resistant to oxidation and seldom become rancid at ordinary temperatures.

Learn more about rancidity with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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