terephthalic acid

[ter-ef-thal-ik, ter-]

ter·eph·thal·ic ac·id

[ter-ef-thal-ik, ter-]
noun Chemistry.
a white, crystalline, water-insoluble solid, C8H6O2, the para isomer of phthalic acid: used chiefly in the manufacture of resins and textile fibers.

Origin:
1855–60; tere(bic) + phthalic
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Terephthalic acid is always a great word to know.
So is addition. Does it mean:
a reaction in which two or more substances combine to form another compound
to produce or obtain one substance from another
Collins
World English Dictionary
terephthalic acid (ˌtɛrɛfˈθælɪk)
 
n
a white crystalline water-insoluble carboxylic acid used in making polyester resins such as Terylene; 1,4-benzenedicarboxylic acid. Formula: C6H4(COOH)2
 
[C20: from terebene + phthalic acid]

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