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.
Astride
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With one leg on each side, as a man when on horseback; with thelegs stretched wide apart; astraddle.Placed astride upon the bars of the palisade. Sir W. Scott.Glasses with horn bows sat astride on his nose. Longfellow.
Astride meaning & definition 1 of Astride.
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Having you legs over and each side of an object
Astride meaning & definition 2 of Astride.
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