- A synthetic rubber with high resistance to petroleum products and sunlight. Neoprene is used in many construction applications, such as roofing and flashing, vibration absorption, and sound absorption.
- A synthetic rubber which is rugged, water-resistant, and especially impervious to oil. Use, for instance, for highly weather resistant cable jackets. Also called poly-chloroprene.
- noun a type of plastic used for making sports injury braces and supports and for making wetsuits