Origin: Greek prefix neo-
Neoprene has 2 different meanings across 1 category:
a synthetic rubber that is resistant to oils and aging; used in waterproof products
"The lifeguard swapped out her old swimsuit for a new neoprene wetsuit because the material resists oil from the harbor water and won't crack after months of sun exposure."
A synthetic rubber, a polymer of chloroprene, commonly used in wetsuits, laptop sleeves, orthopedic braces, electrical insulation, liquid and sheet-applied elastomeric membranes and flashings, car fan belts, etc.
"I bought a neoprene sleeve to protect my new laptop from scratches and spills."