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an·ti·di·uret·ic -'ret-ik adj tending to oppose or check excretion of urine
antidiuretic n an antidiuretic substance
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an·ti·di·uret·ic (an″te-) (an″ti-di″u-retґik) 1. suppressing the rate of urine formation. 2. an agent that slows the rate of urine formation.Medical dictionary. 2011.