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con·ser·va·tive kən-'sər-vət-iv adj not extreme or drastic esp designed to preserve parts or restore or preserve function <\conservative treatment of prostate cancer by watchful waiting or hormonal therapy in contrast to radical prostatectomy> compare aggressive (3), RADICAL
con·ser·va·tive·ly adv
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con·ser·va·tive (kən-surґvə-tiv) [L. conservare to preserve] designed to preserve health, restore function, and repair structures by nonradical methods, as conservative surgery. Cf. radical.Medical dictionary. 2011.