terphenyl

noun

ter·​phenyl

¦tər+

: any of three isomeric crystalline hydrocarbons C₆H₅C₆H₄C₆H₅ that contain three benzene rings linked in ortho, meta, and para positions, that are obtained usually along with biphenyl from benzene, and that are used chiefly as industrial heat transfer media

also : a mixture of two or all three of these hydrocarbons

Word History

Etymology

International Scientific Vocabulary ter- + phenyl

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now