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

Unlike nylon brushes, silicone ones carry no risk of scratching or removing paint from your bottle. —Bestreviews, Chicago Tribune, 24 Apr. 2026

Stellar industrial design, great build quality, and high-octane silicone make this a top choice, especially for this price. —K. Thor Jensen, PC Magazine, 24 Apr. 2026

These containers ditch the plastic in favor of silicone while retaining the same look and benefits of classic deli containers—namely, their stackability, one-size-fits-all lid, and lightweight feel. —Alaina Chou, Bon Appetit Magazine, 23 Apr. 2026

Reference markers printed directly onto the silicone collar let a tiny onboard camera measure those deformations in real time. —Omar Kardoudi april 23, New Atlas, 23 Apr. 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