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lipid

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lip⋅id

[lip-id, lahy-pid]
–noun Biochemistry.
any of a group of organic compounds that are greasy to the touch, insoluble in water, and soluble in alcohol and ether: lipids comprise the fats and other esters with analogous properties and constitute, with proteins and carbohydrates, the chief structural components of living cells.
Also, lip⋅ide [lip-ahyd, -id, lahy-pahyd, -pid] .


Origin:
1920–25; lip- + -id 3
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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lip·id   (lĭp'ĭd, lī'pĭd)   
n.  Any of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in nonpolar organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells.

[French lipide : Greek lipos, fat; see lipo- + French -ide, -ide.]
lip·id'ic adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

lipid 
"organic substance of the fat group," from Fr. lipide, coined 1923 by G. Bertrand from Gk. lipos "fat, grease" (see leave (v.)) + chemical suffix -ide.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: lip·id
Pronunciation: 'lip-&d
Variant: also lip·ide /-"Id/
Function: noun
: any of varioussubstances that are soluble in nonpolar organic solvents (as chloroform and ether), that with proteins and carbohydrates constitute the principal structural components of living cells, and that includefats, waxes, phospholipids, cerebrosides, and related and derived compounds
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

lipid lip·id (lĭp'ĭd, lī'pĭd) or lip·ide (lĭp'īd', lī'pīd')
n.
Any of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in common organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells.


lip·id'ic adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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