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 speaker unit, which sits on the ear canal, features removable silicone ear cushions. — Prakhar Khanna, Forbes.com, 4 July 2026

Lids Carafes intended to store beverages in the fridge often come with a lid, usually made from silicone or cork. — Bestreviews, Mercury News, 29 June 2026

The oxygen released in the tank then flows through four silicone supply tubes that are attached to the roach’s spiracles prior to the operation. — Mack Degeurin, Popular Science, 1 July 2026

Add a fun pop of style to your everyday routine with customizable silicone bags from Très Gelée. — ABC News, 2 July 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