GNU Collaborative International Dictionary of English
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Found one definition
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Contraindicate (?), v. t. [imp. & p. p. Contraindicated (?); p. pr. & vb. n. Contraindicating (?).] (Med.) To indicate, as by a symptom, some method of treatment contrary to that which the general tenor of the case would seem to require; especially, to indicate that a particular method of treatment should not be used; as, “penicillin is contraindicated in patients who have shown hypersensitivity”.
[1913 Webster +PJC]
Contraindicating symptoms must be observed. Harvey.
[1913 Webster]