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Meaning of orthophthalic acid

or•tho•phthal'ic ac'id

Pronunciation: (ôr"thu-thal'ik, -thuf-thal'-). [key]
— Chem. Chem.
  1. See under(def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.