lipid
US /ˈlɪp.ɪd/
UK /ˈlɪp.ɪd/
1.
any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
:
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The cell membrane is primarily composed of a bilayer of lipids.
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Dietary lipids are essential for energy storage and hormone production.