precipitant

precipitant
noun
  1. a cause of a particular action or event
    起因
    the immediate precipitants of the conflict were a succession of undisciplined actions.
    一系列无纪律行为是冲突的直接起因。
    ■(chiefly Psychology)a cause or stimulus which precipitates a particular condition
    (主心理)病因
    depression may be a precipitant in many cases.
    抑郁症可能是许多疾病的诱因。
    ■(Chemistry)a substance that causes the precipitation of a specified substance
    (化)沉淀剂
    a protein precipitant.
    蛋白沉淀剂。
派生
precipitance
noun
语源
  1. early 17th cent.: from obsolete French précipitant 'precipitating', present participle of précipiter
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