in·o·si·tol (ĭ-nō'sĭ-tôl', -tōl', ī-nō'-)
n.
Any of nine isomeric alcohols, C₆H₁₂O₆·2H₂O, especially one found in plant and animal tissue and classified as a member of the vitamin B complex.

[Greek īs, īn-, sinew + -OS(E)² + -IT(E)² + -OL¹.]

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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