calculi

Noun

• a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body
  • "renal calculi can be very painful"
• an incrustation that forms on the teeth and gums
• the branch of mathematics that is concerned with limits and with the differentiation and integration of functions
• plural of calculus

Synonyms

calculus, concretion, infinitesimal calculus, tartar, tophus