Definition of cholesterol
: a steroid alcohol C27H45OH that is present in animal cells and body fluids, regulates membrane fluidity, and functions as a precursor molecule in various metabolic pathways and as a constituent of LDL may cause atherosclerosis — compare bad cholesterol, good cholesterol
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Merriam-Webster unabridged
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Time Traveler for cholesterol
The first known use of cholesterol was in 1894
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