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

The Kitsch Rosemary and Biotin Shampoo Bar—which is free of sulfates, parabens, silicones, phthalates, and artificial fragrances—has garnered a large fan base with over 8,000 shoppers in the past month alone and for good reason. — Tessa Petak, InStyle, 4 July 2026

Bluetooth Speaker Deal The Bose SoundLink Flex 2nd Gen drops rugged, portable audio into your beach gear by wrapping a clear high-fidelity speaker array inside a shock-absorbent silicone body. — Juhi Wadia, PC Magazine, 3 July 2026

Basically, the silicone cup creates suction around the area in question and you’re given a massage via pulling instead of pushing. — Condé Nast, Condé Nast Traveler, 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