olefin
noun
ole·fin ˈō-lə-fən 
1
: alkene
2
: a synthetic fiber (such as polypropylene) derived from an alkene
olefinic
ˌō-lə-ˈfi-nik
adjective 
Example Sentences
Recent Examples on the Web Created with an olefin material, these Parasol outdoor curtains are versatile for either indoor or outdoor spaces and are one of the best outdoor curtains for patios. 
Rachel Dube, Better Homes & Gardens, 6 Sep. 2022 This high-end egg chair features a cushion covered in Sunbrella fabric, which is better suited to outdoor conditions than polyester or olefin. Rachel Klein, Popular Mechanics, 29 July 2022 Then there are the toe and heel portions, which are lightly padded with polyester-olefin nanofibers that grip the inside of your shoe to prevent your foot from moving around and thus reduce the chance of friction blisters. Ariella Gintzler, Outside Online, 27 May 2022 This smart-looking, classic round patio umbrella features a durable water-resistant olefin canopy that offers UV protection and resists mildew, plus a crank mechanism to pop it open and auto tilt. Rachel Klein, Popular Mechanics, 17 May 2022 Online reviewers found set-up to be much easier than expected and loved how comfy the olefin fabric was on the sofa. Emma Seymour, Good Housekeeping, 13 May 2022 The removable cover is made of nylon, polyester, and olefin and is machine washable. Andrea Navarro, Glamour, 9 May 2022 The canopy, which operates on a crank lift system, is made from a sustainable olefin fabric that’s weather-resistant and helps block out the sun’s UV rays. Lindsay Boyers, Forbes, 27 May 2021 The canopy, which operates on a crank lift system, is made from a sustainable olefin fabric that’s weather-resistant and helps block out the sun’s UV rays. Lindsay Boyers, Forbes, 27 May 2021 See More
Rachel Dube, Better Homes & Gardens, 6 Sep. 2022 This high-end egg chair features a cushion covered in Sunbrella fabric, which is better suited to outdoor conditions than polyester or olefin. Rachel Klein, Popular Mechanics, 29 July 2022 Then there are the toe and heel portions, which are lightly padded with polyester-olefin nanofibers that grip the inside of your shoe to prevent your foot from moving around and thus reduce the chance of friction blisters. Ariella Gintzler, Outside Online, 27 May 2022 This smart-looking, classic round patio umbrella features a durable water-resistant olefin canopy that offers UV protection and resists mildew, plus a crank mechanism to pop it open and auto tilt. Rachel Klein, Popular Mechanics, 17 May 2022 Online reviewers found set-up to be much easier than expected and loved how comfy the olefin fabric was on the sofa. Emma Seymour, Good Housekeeping, 13 May 2022 The removable cover is made of nylon, polyester, and olefin and is machine washable. Andrea Navarro, Glamour, 9 May 2022 The canopy, which operates on a crank lift system, is made from a sustainable olefin fabric that’s weather-resistant and helps block out the sun’s UV rays. Lindsay Boyers, Forbes, 27 May 2021 The canopy, which operates on a crank lift system, is made from a sustainable olefin fabric that’s weather-resistant and helps block out the sun’s UV rays. Lindsay Boyers, Forbes, 27 May 2021 See More Word History
Etymology
International Scientific Vocabulary, from French (gaz) oléfiant ethylene, from Latin oleum
First Known Use
1860, in the meaning defined at sense 1
Medical Definition
olefin
noun
ole·fin ˈō-lə-fən
: alkene