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 team discovered that cells seeded in a polydimethylsiloxane (PDMS) silicone vessel avoid sticking to the surface and instead bind to one another, assembling into a cohesive sheet. —Neetika Walter, Interesting Engineering, 11 Dec. 2025

Acutis' face and hands were reconstructed with silicone. —Ralphie Aversa, USA Today, 10 Dec. 2025

The set comes with one 9-inch and one 10-inch round bread-proofing baskets, as well as a dough scraper, Danish dough whisk, flour and sugar sifter, silicone brush, bread lame, five extra blades, and two cloth liners. —Stephanie Osmanski, Better Homes & Gardens, 9 Dec. 2025

It’s made from silicone and has a 15-cup capacity that makes a large batch of popcorn in less than 3 minutes. —Alicia Geigel, Southern Living, 9 Dec. 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