Dictionary.com

phthalic

[ thal-ik, fthal- ]
/ ˈθæl ɪk, ˈfθæl- /

adjective Chemistry.

of or derived from phthalic acid.

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Origin of phthalic

First recorded in 1855–60; (na)phthal(ene) + -ic

Words nearby phthalic

phrynoderma, PHS, PHSE, phthalate, phthalein, phthalic, phthalic acid, phthalic anhydride, phthalin, phthalocyanine, phthalocyanine blue
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for phthalic

  • Dilute nitric acid oxidizes it to phthalic acid, and sodium reduces it in alcoholic solution to hydrindene, C9H10.

    Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3|Various

  • The phthaleïn formed from gallic acid and phthalic anhydride really results from the union of the latter with pyrogallol.

    Coal|Raphael Meldola

  • Phthalic acid, which was discovered in 1836 by Laurent, is a product of the oxidation of many benzenoid compounds.

    Coal|Raphael Meldola

  • It condenses with phthalic anhydride to form rhodamine, and with succinic anhydride to rhodamine S.

    Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3|Various

Medical definitions for phthalic

phthalic
[ thăl′ĭk, fthăl′- ]

adj.

Relating to or derived from naphthalene.
Relating to phthalic acid.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.