microcrystalline wax

noun

: any of various plastic materials that are obtained from petroleum (as by refining of tank bottoms from crude oil or by removal with a solvent of oil from crude petrolatum), that differ in general from paraffin waxes in having higher melting points and viscosities and much finer and less distinct crystals, and that are used chiefly in laminated paper, in coatings and liners, in adhesives and sealing compositions, and in polishes compare petroleum wax

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!