Spelling Bee Hive found 1 result for phthalein. This page contains the same results as searching for that word in the app.
phthalein - noun; Level 7; origin: Greek; pronunciation: thalēə̇n, -āl-, -ˌlēn. any of a group of chemical compounds formed by the reaction of a white crystalline compound with a phenol, from which certain synthetic dyes are derived.
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