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

Best Teether Made from 100% food-grade, BPA-free silicone, these teething toys are perfect for infants who are looking for a way to soothe tender gums. —Pamela Brill, Parents, 2 Oct. 2025

With this procedure, a silicone device is surgically placed around a portion of the stomach to restrict food intake. —Angelica Stabile, FOXNews.com, 2 Oct. 2025

Apart from four silicone squeeze bottles, this kit comes with two mini spray bottles, a hand pump bottle, and two mini jars. —Amelia McBride, Travel + Leisure, 2 Oct. 2025

Its silicone design sits comfortably on the face, while quick preset modes make treatments simple to fit into daily life. —Conçetta Ciarlo, Vogue, 1 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