noun Chemistry.
a crystalline compound, C 1 5 H 1 8 O 3 , the active principle of santonica.

1830–40; santon(ica) + -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
santonin (ˈsæntənɪn)
a white crystalline soluble substance extracted from the dried flower heads of santonica and used in medicine as an anthelmintic. Formula: C15H18O3
[C19: from santonica + -in]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

santonin san·to·nin (sān'tə-nĭn)
A colorless crystalline compound obtained from species of wormwood and used as an anthelmintic.

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