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Medical Dictionary

rust

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noun \ˈrəst\

Medical Definition of rust

  1. 1:  the reddish brittle coating formed on iron especially when chemically attacked by moist air and composed essentially of hydrated ferric oxide

  2. 2:  any of numerous destructive diseases of plants produced by fungi (order Uredinales) and characterized by reddish brown pustular lesions; also :  a fungus causing this





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