[ fee-nawl-suhl-fohn-thal-een, -ee-in, -fthal-, -nol- ]
/ ˌfi nɔlˌsʌl foʊnˈθæl in, -i ɪn, -ˈfθæl-, -nɒl- /

noun Chemistry.

a bright to dark red crystalline compound, C19H14O5S, slightly soluble in water, alcohol, and acetone: used as an acid-base indicator and as a diagnostic reagent in medicine.

Nearby words

  1. phenolic,
  2. phenolic resin,
  3. phenolion,
  4. phenology,
  5. phenolphthalein,
  6. phenolsulfonphthalein,
  7. phenom,
  8. phenomena,
  9. phenomenal,
  10. phenomenalism

Origin of phenolsulfonephthalein

Also called phenol red. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019