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.
Symbolical
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Of or pertaining to a symbol or symbols; of the nature
of a symbol; exhibiting or expressing by resemblance or signs;
representative; as, the figure of an eye is symbolic of sight and
knowledge.
Symbolical meaning & definition 1 of Symbolical.
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representing something else:
Symbolical meaning & definition 2 of Symbolical.
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