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saponification number

noun Chemistry.
  1. the number of milligrams of potassium hydroxide required to saponify one gram of a given ester, especially a glyceride.
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Origin of saponification number

First recorded in 1895–1900; saponi(fy) + -fication
Also called saponification value.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018