Pronunciation:
[oh-luh-fin]

 
Origin:
1855-60; French

Definition:
A manufactured fiber in which the fiber-forming substance is any long chain synthetic polymer composed of at least 85% by weight of ethylene, polypylene, or other olefin units. Olefin fibers combine lightweight with high strength and abrasion resistance, and are currently being used in rope, indoor-outdoor carpets, and lawn furniture upholstery.