noun phthal·in \ˈthalə̇n\

Definition of phthalin



  1. :  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

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Origin and Etymology of phthalin

International Scientific Vocabulary phthal- + -in

Seen and Heard

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feeling or affected by lethargy

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