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.
Tuberous
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Covered with knobby or wartlike prominences; knobbed.
Tuberous meaning & definition 1 of Tuberous.
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having, looking like, or relating to a tuber (= the swollen underground stem or root of a plant such as a potato) :
Tuberous meaning & definition 2 of Tuberous.
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Of the nature of a tuber.
Tuberous meaning & definition 3 of Tuberous.
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