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.
Ninetieth
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The quotient of a unit divided by ninety; one of ninety
equal parts of anything.
Ninetieth meaning & definition 1 of Ninetieth.
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90th written as a word
Ninetieth meaning & definition 2 of Ninetieth.
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Constituting number ninety in a sequence; 90th.
Ninetieth meaning & definition 3 of Ninetieth.
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