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Webster 1913 Edition
Tophus
To′phus
,Noun.
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.
2.
(Min.)
Calcareous tufa.