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

It’s constructed from 100 percent silicone and features slotted holes and stainless steel clips that easily attach to any pot, pan, or skillet. —Alicia Geigel, Southern Living, 12 Sep. 2025

The eartips also add a thin layer of foam to their silicone shells compared with the AirPods Pro 2's completely silicone tips, which can improve the seal against your ear canal and further block out noise. —PC Magazine, 11 Sep. 2025

The silicone straw is safe, soft, and small enough for even the tiniest mouths. —Emily Farris, Bon Appetit Magazine, 11 Sep. 2025

Spread mixture onto prepared rimmed baking sheet using a silicone spatula. —Caron Golden, San Diego Union-Tribune, 10 Sep. 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