Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun calculus

3 senses of calculus

Sense 1
calculus, concretion -- (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")
       => rock, stone -- (a lump or mass of hard consolidated mineral matter; "he threw a rock at me")

Sense 2
tartar, calculus, tophus -- (an incrustation that forms on the teeth and gums)
       => crust, incrustation, encrustation -- (a hard outer layer that covers something)

Sense 3
calculus, infinitesimal calculus -- (the branch of mathematics that is concerned with limits and with the differentiation and integration of functions)
       => pure mathematics -- (the branches of mathematics that study and develop the principles of mathematics for their own sake rather than for their immediate usefulness)