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

Crafted from soft, flexible silicone and durable stainless steel with smooth silicone tips, these BPA-free straws are built to last without retaining tastes, odors, or wear over time. —ABC News, 20 June 2026

Parker kept up the lie for months by buying fake pregnancy results, ultrasounds and a silicone moon belly. —Caroline Blair, PEOPLE, 18 June 2026

The ice cube tray is made from BPA-free silicone that is also safe in the oven and the freezer. —Bestreviews, Chicago Tribune, 17 June 2026

Allow to sit 10-15 minutes Wipe and scrape the paste gently away with microfiber cloths, soft sponges, and a plastic or silicone scraper. —Louise Parks, Martha Stewart, 17 June 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