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WordReference Random House Unabridged Dictionary of American English © 2024phthal•o•cy•a•nine (thal′ə sī′ə nēn′, -nin, fthal′-),USA pronunciation n. [Chem.]- ChemistryAlso called metal-free phthalocyanine. a blue-green pigment, C32H18N8, derived from phthalic anhydride.
- Chemistryany of the group of blue or green pigments produced by the interaction of metal-free phthalocyanine and a metal, esp. copper: used chiefly in the manufacture of enamels, printing inks, and automotive finishes.
- (na)phthal(ene) + -o- + cyanine 1930–35
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