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 Universal Tag Tracker attaches to keys, bags, backpacks, wallets, and more, and each comes with a silicone case and carabiner. —ABC News, 13 June 2026

The implantable pulse generator was placed within a silicone cuff on the left cervical vagus nerve, with electrode contacts positioned to deliver stimulation. —Samantha Agate, Fort Worth Star-Telegram, 13 June 2026

When an object touches a sucker, the silicone deforms and changes the light reflection pattern. —Omar Kardoudi june 13, New Atlas, 13 June 2026

Reinforced with a silicone grip and soft-sided boning, this strapless bra stays put. —Bestreviews, Chicago Tribune, 11 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