lactoprene

noun

lac·​to·​prene

ˈlaktəˌprēn

plural -s

: any of several synthetic rubbers that are polymers or copolymers of an acrylic ester (as ethyl acrylate) and are characterized by good resistance to flexing and good resistance to hydrocarbon oils, oxygen and ozone, weather, and heat but not to low temperatures

Word History

Etymology

lact- + isoprene

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!