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Medical Dictionary

thymolphthalein

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noun thy·mol·phtha·lein \-ˈthal-ˌēn, -ˈthā-ˌlēn, -ˈthal-ē-ən\

Medical Definition of thymolphthalein

: a crystalline compound C₂₈H₃₀O₄ analogous to phenolphthalein and likewise used as an acid-base indicator

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