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.
Ulcerous
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Having the nature or character of an ulcer; discharging
purulent or other matter.
Ulcerous meaning & definition 1 of Ulcerous.
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relating to or being affected by an ulcer (= a break in the skin or on an organ that does not heal naturally) :
Ulcerous meaning & definition 2 of Ulcerous.
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