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 toiletry bottle assortment includes an impressive number of items, including four silicone bottles, two spray bottles, and four jars for cream products. —Genevieve Cepeda, Travel + Leisure, 28 Mar. 2025

The curved silicone brush ensures that each and every lash — even the finest ones near the inner corners of your eyes — are coated in pigments for a fluttery effect sans clumps. —Claire Sullivan, Footwear News, 28 Mar. 2025

It’s got more than 28,000 five-star ratings from people who rave about its sleek design and handy locking silicone strap. —The People Deals Team, People.com, 27 Mar. 2025

In this method, the prints are applied directly onto the keycaps using a silicone pad and sit on top of the keycaps. —Henri Robbins, WIRED, 24 Mar. 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