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单词 phenolphthalein
释义

WordReference Random House Unabridged Dictionary of American English © 2024
phe•nol•phthal•ein  (fē′nôl thalēn, -ē in, -fthal-, -nol-),USA pronunciation n. [Chem., Pharm.]
  1. Chemistry, Drugsa white, crystalline compound, C20H14O4, used as an indicator in acid-base titration and as a laxative.
  • phenol + phthalein 1870–75

Collins Concise English Dictionary © HarperCollins Publishers::
phenolphthalein /ˌfiːnɒlˈθeɪliːn -lɪɪn -ˈθæl-/ n
  1. a colourless crystalline compound used in medicine as a laxative and in chemistry as an indicator. Formula: C20H14O4
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