phenolphthalein - WordReference.com Dictionary of English

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- - pheasant
  - pheasant's eye
  - pheasantry
  - phen-
  - phencyclidine
  - pheno-
  - phenobarbitone
  - phenocryst
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  - phenology
  - phenolphthalein
  - phenom
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  - phenomenal
  - phenomenalism
  - phenomenology
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  - phenothiazine
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  - phenylalanine
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phenolphthalein

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Concise Oxford English Dictionary © 2008 Oxford University Press:
phenolphthalein /ˌfiːnɒlˈ(f)θaliːn, -ˈ(f)θeɪl-/

▶noun Chemistry a colourless crystalline solid (pink in alkaline solution) used as an acid–base indicator. [C₂₀H₁₄O₄.]

– origin C19: from phenol + -phthal- (from naphthalene) + -in1.

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