calculus

Noun

• the branch of mathematics that is concerned with limits and with the differentiation and integration of functions

• an incrustation that forms on the teeth and gums

• 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
    

Related words

• Synonyms: 
  infinitesimal calculus , tartar , tophus , concretion