An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Philosophical
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Of or pertaining to philosophy; versed in, or imbued
with, the principles of philosophy; hence, characterizing a
philosopher; rational; wise; temperate; calm; cool.
Philosophical meaning & definition 1 of Philosophical.
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relating to the study or writing of philosophy:
Philosophical meaning & definition 2 of Philosophical.
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