Dictionary
si•meth•i•cone
Pronunciation: (sī-meth'i-kōn"), [key]—
n. Pharm.
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.