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resorcinolphthalein

American  
[ri-zawr-suh-nawl-thal-een, -ee-in, -fthal-, -nol-, rez-awr-] / rɪˈzɔr sə nɔlˈθæl in, -i ɪn, -ˈfθæl-, -nɒl-, rɛzˈɔr- /

noun

Chemistry.
  1. fluorescein.


Etymology

Origin of resorcinolphthalein

resorcinol + phthalein