[thal-ik, fthal-]
adjective Chemistry.
of or derived from phthalic acid.

1855–60; (na)phthal(ene) + -ic Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

phthalic phthal·ic (thāl'ĭk, fthāl'-)

  1. Relating to or derived from naphthalene.

  2. Relating to phthalic acid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Definition: o-xylene is an aromatic hydrocarbon, used in the production of phthalic anhydride.
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