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The Collaborative International Dictionary
Tophi

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.

  2. (Min.) Calcareous tufa.

Wiktionary
tophi

n. (plural of tophus English)

WordNet
tophus
  1. n. a deposit of urates around a joint or in the external ear; diagnostic of advanced or chronic gout [syn: chalkstone]

  2. an incrustation that forms on the teeth and gums [syn: tartar, calculus]

  3. [also: tophi (pl)]

tophi

See tophus