silicone

noun

sil·​i·​cone ˈsi-lə-ˌkōn 

: any of various polymeric organic silicon compounds obtained as oils, greases, or plastics and used especially for water-resistant and heat-resistant lubricants, varnishes, binders, and electric insulators

Examples of silicone in a Sentence

a prosthesis made of silicone

Recent Examples on the Web

The day that Pamela Anderson was introduced to silicone. —Rob Sheffield, Rolling Stone, 22 Nov. 2025

Octobuddy Silicone Suction Phone Case For travelers who double as their own content creators, the Octobuddy silicone mount is a total game-changer. —Chaise Sanders, Travel + Leisure, 21 Nov. 2025

The silicone earbud tips create a full seal in the ear, resulting in top-of-the-line noise cancellation. —PC Magazine, 20 Nov. 2025

This silicone utensil set includes a basting brush, scraper, and two spoon spatulas — all of which are dishwasher-safe, designed with ergonomic handles for a more comfortable and stable grip, and can withstand temperatures up to 500 degrees Fahrenheit. —Emily Weaver, PEOPLE, 15 Nov. 2025

Word History

Etymology

silicon + -one

First Known Use

1943, in the meaning defined above

Phrases Containing silicone

• silicone rubber

Rhymes for silicone

• acetone
• anglophone
• baritone
• bourguignon
• buspirone
• chaperon
• chaperone
• cobblestone
• collarbone
• cornerstone
• cortisone
• dictaphone

Kids Definition

silicone

noun

sil·​i·​cone ˈsil-ə-ˌkōn 

: any of various silicon compounds that contain carbon and hydrogen, are obtained as oily or greasy substances or plastics, and are used especially for water-resistant and heat-resistant lubricants and varnishes

Medical Definition

silicone

noun

sil·​i·​cone ˈsil-ə-ˌkōn 

: any of various polymeric organic silicon compounds which are obtained as oils, greases, or plastics and some of which have been used as surgical implants