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The following 2 entries include the term PHTHALIC.
phthalic acid
noun: any of three isomeric acids C8H6O4 obtained by oxidation of various benzene derivatives
phthalic anhydride
noun: a crystalline cyclic acid anhydride C8H4O3 used especially in making alkyd resins
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- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


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Merriam-Webster unabridged