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

Each cooler box is individually handcrafted in Cape Town, South Africa, from a combination of plastic, polystyrene, aluminum, leather, brass, steel, and silicone. — Alison Fox, Travel + Leisure, 27 July 2026

Slowly whisk the dry ingredients into the wet ingredients, then fold in the vegetable oil with a silicone spatula until fully incorporated. — Maggie Meyer Glisan, Better Homes & Gardens, 26 July 2026

Ultra-realistic humanoid robots are being developed with silicone skin, lifelike facial expressions, natural voices and simulated emotions. — Bernard Marr, Forbes.com, 23 July 2026

To overcome this limitation, the researchers developed a new hydrophilic (water-attracting) silicone formula that can be used for building objects layer by layer. — Maryna Holovnova, New Atlas, 21 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