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.
Drop line
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The opposite of pick up lines, the pick-up line equivalent of anti jokes
Drop line meaning & definition 1 of Drop line.
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Drop line in Ballooning. Measures 30-45m in length. Used by the pilot whenever he needs assistance in landing.
Drop line meaning & definition 2 of Drop line.
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