lecithin

[les-uh-thin]
noun
1.
Biochemistry. any of a group of phospholipids, occurring in animal and plant tissues and egg yolk, composed of units of choline, phosphoric acid, fatty acids, and glycerol.
2.
a commercial form of this substance, obtained chiefly from soybeans, corn, and egg yolk, used in foods, cosmetics, and inks.

Origin:
1860–65; < Greek lékith(os) egg yolk + -in2

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To lecithin
Collins
World English Dictionary
lecithin (ˈlɛsɪθɪn)
 
n
biochem Systematic name: phosphatidylcholine any of a group of phospholipids that are found in many plant and animal tissues, esp egg yolk: used in making candles, cosmetics, and inks, and as an emulsifier and stabilizer in foods (E322)
 
[C19: from Greek lekithos egg yolk]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

lecithin
1861, from Fr. lécithine (coined 1850 by N.T. Gobley), from Gk. lekithos "egg yolk," one of the places where it is found, + chemical suffix -ine. Gk. lekithos is of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

lecithin lec·i·thin (lěs'ə-thĭn)
n.
Any of a group of phospholipids that on hydrolysis yield two fatty acid molecules and a molecule each of glycerophosphoric acid and choline. They are found in nervous tissue, especially myelin sheaths and egg yolk, and in the plasma membrane of plant and animal cells.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
lecithin   (lěs'ə-thĭn)  Pronunciation Key 
A fatty substance present in most plant and animal tissues that is an important structural part of cell membranes, particularly in nervous tissue. It consists of a mixture of diglycerides of fatty acids (especially linoleic, palmitic, stearic, and oleic acid) linked to a phosphoric acid ester. Lecithin is used commercially in foods, cosmetics, paints, and plastics for its ability to form emulsions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
The chemical is replaced by vegetable lecithin and when ingested disallows one to get addicted.
We know the liver emulsifies fat with lecithin and bile, and it might have something to do with that.
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;