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precipitant

pre·cip·i·tant [ prə síppitənt ]


noun  (plural pre·cip·i·tants)
Definition:
 
chemistry something causing precipitation: a substance that causes precipitation



adjective 
Definition:
 
1. too hasty: done too quickly and impulsively, often resulting in mistakes

2. sudden or unexpected: happening suddenly or unexpectedly

[Early 17th century. < French précipitant, present participle of précipiter< Latin praecipitare (see precipitate)]

pre·cip·i·tan·cy noun
pre·cip·i·tant·ly adverb
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