phthalin

noun

phthal·​in

ˈthalə̇n

plural -s

: any of a group of colorless compounds obtained by reduction of the phthaleins into which they are easily reconverted by oxidation

especially : the compound C₂₀H₁₆O₄ from phenolphthalein

Word History

Etymology

International Scientific Vocabulary phthal- + -in

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