sterol

[steer-awl, -ol, ster-]
noun Biochemistry.
any of a group of solid, mostly unsaturated, polycyclic alcohols, as cholesterol and ergosterol, derived from plants or animals.

Origin:
1910–15; extracted from such words as cholesterol, ergosterol, etc.

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World English Dictionary
sterol (ˈstɛrɒl)
 
n
biochem any of a group of natural steroid alcohols, such as cholesterol and ergosterol, that are waxy insoluble substances
 
[C20: shortened from cholesterol, ergosterol, etc]

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Medical Dictionary

sterol ster·ol (stěr'ôl', -ōl', stēr'-)
n.
Any of a group of predominantly unsaturated solid alcohols of the steroid group, such as cholesterol and ergosterol, present in the fatty tissues of plants and animals.

The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
sterol   (stîr'ôl')  Pronunciation Key 
Any of various alcohols having the structure of a steroid, usually with a hydroxyl group (OH) attached to the third carbon atom. Sterols are found in the tissues of animals, plants, fungi, and yeasts and include cholesterol.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Beta-sitosterol is a plant sterol found in some of these herbs that is marketed as a dietary supplement for prostate health.
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