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isophthalic acid

American  
[ahy-suh-thal-ik, ahy-suh-] / ˈaɪ səˈθæl ɪk, ˌaɪ sə- /

noun

Chemistry.

  1. a colorless, crystalline, slightly water-soluble solid, C 8 H 6 O 2 , the meta isomer of phthalic acid: used chiefly in the manufacture of resins and plasticizers.

Etymology

Origin of isophthalic acid

First recorded in 1865–70; iso- + phthalic

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.