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 handles are also made of high-quality silicone, which provides a nonslip grip. —Bestreviews, Mercury News, 28 Mar. 2026

Many thickening conditioners rely on silicones or heavy coatings to create the illusion of fullness, which can backfire over time by weighing hair down further. —Miami Herald, 26 Mar. 2026

Gourkani contacted Gomez, who ran an unlicensed cosmotology business out of Florida, about silicone injections to increase the size of her buttocks, Wagstaffe said. —Los Angeles Times, 25 Mar. 2026

Elevate your at-home culinary experiences with avocado slicers and lemon squeezers to meat thermometers, silicone cooking utensils and all the fun in between. —Tory Johnson, ABC News, 21 Mar. 2026

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