simethicone

noun

si·meth·i·cone si-ˈmeth-i-ˌkōn, sī-

: a mixture of dimethylpolysiloxanes and silica in liquid or tablet form that is used as an antiflatulent see mylicon

Browse Nearby Words

Simarouba

simethicone

simian crease

See all Nearby Words

Cite this Entry

Style

“Simethicone.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/simethicone. Accessed 8 Jul. 2026.

Copy Citation

More from Merriam-Webster

Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.

Can you solve 4 words at once?

Word of the Day

gambol

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Popular in Wordplay

simethicone

noun

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

gambol

Popular in Grammar & Usage

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Popular in Wordplay

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

One-Word Oxymorons: Bittersweet, Spendthrift, and More

Ten Words Ending with a Silent ‘T’

12 Lovely and Unusual Words for the Natural World

Popular

Is that lie 'bald-faced' or 'bold-faced'?

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

Games & Quizzes