WordReference Random House Unabridged Dictionary of American English © 2025
si•meth•i•cone
(sī meth′i kōn′),USA pronunciation n. [Pharm.]
- Drugsan 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.
- si(lica) + meth(yl) + (sil)icone