Definition of "tophus" []

• A deposit of urates in the skin and tissue around a joint or in the external ear, occurring in gout. Also called chalkstone. (noun)
• A concretion of mineral salts and organic matter deposited on the surface of the teeth. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Sometimes, if gout lasts for many years, uric acid crystals can collect in the joints or tendons, under the skin, or on the outside the ears, forming a whitish deposit called a tophus."
• "Et tophus fcaber, et nigris exefa chelydris Creta, negant alios seque ferpentibus agros Dulcem ferre cibum, et curvas praebere latebras."
• "4 Diab, Lexicon of orthopaedic etymology (1999), p.353 (see link): "NB: the spelling tophus perhaps was introduced into Latin as the more learned form, as though it were of Greek origin.""