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simethicone

[sahy-meth-i-kohn]
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noun Pharmacology.
  1. an active ingredient in many antacid preparations that causes small mucus-entrapped air bubbles in the intestines to coalesce into larger bubbles that are more easily passed.
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Origin of simethicone

si(lica) + meth(yl) + (sil)icone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
simethicone in Medicine

simethicone

(sĭ-mĕth′ĭ-kōn′)
n.
  1. A mixture of dimethyl polysiloxanes and silica gel that is used as an antiflatulent.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.