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

This best-selling wedding band with more than 12,700 five-star ratings is made of a premium, hypoallergenic silicone that is far more flexible than metal. —Katie Jackson, Travel + Leisure, 26 Oct. 2025

For best results, use a reusable silicone baking mat. —Jenavieve Christensen, Better Homes & Gardens, 23 Oct. 2025

Rubber and silicone can tear easily, though, so that’s something to keep in mind. —Bestreviews, Mercury News, 21 Oct. 2025

To keep it in pristine condition, use a tissue or dry cloth to wipe the curler and silicone pads clean after each use, and replace the pad every few months or so to maintain peak performance. —Kiana Murden, Vogue, 18 Oct. 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