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

This silicone version features an open back so water won’t become trapped inside the bulb. —Pamela Brill, Parents, 22 May 2025

The collar had a silicone band on it, holding one of Apple's AirTags underneath. —ArsTechnica, 21 May 2025

The Rope Light is RGB-addressable and comes in 5m lengths, with a soft silicone diffuser over top that gives it an even glow. —Anthony Karcz, Forbes.com, 20 May 2025

The silicone bottles are easily refillable, and each one is built with a leakproof design that won’t cause spillage within your toiletry kit. —Merrell Readman, Travel + Leisure, 20 May 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