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 kit includes an AirPod cleaning pen with a silicone clip, a flocking sponge and brush, a keyboard key extractor and a screen cleaner spray. —Bestreviews, Chicago Tribune, 30 Apr. 2026

Food-grade silicone handles temperature extremes well and is a practical option for families who batch-cook and freeze meals. —Allison Palmer, Sacbee.com, 30 Apr. 2026

Each container comes with a matching lid with a silicone gasket, which provides an airtight seal and locks in freshness. —Alicia Geigel, Southern Living, 28 Apr. 2026

From a full-spectrum red light therapy wand to a hands-free silicone face mask and a hair detangler designed to strengthen and revitalize, these devices are built to support smoother, healthier-looking skin and hair. —Tory Johnson, ABC News, 27 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