tophi

1 definition found

tophi - Collaborative International Dictionary of English v.0.48 :

  Tophus \To"phus\, n.; pl. Tophi. [NL.: cf. F. tophus a mineral
     concretion in the joint. See Toph.] [Written also tofus.]
     1. (Med.) One of the mineral concretions about the joints,
        and in other situations, occurring chiefly in gouty
        persons. They consist usually of urate of sodium; when
        occurring in the internal organs they are also composed of
        phosphate of calcium.
        [1913 Webster]
  
     2. (Min.) Calcareous tufa.
        [1913 Webster]