calculi

Noun

calculus (countable and uncountable, plural calculi or calculuses)

1. (countable, dated) Calculation; computation.

   Synonyms:

   ciphering, reckoning, calculation, computation, computing, supputation

2. (countable) Any formal system in which symbolic expressions are manipulated according to fixed rules.
   • lambda calculus
3. (definite, often, uncountable) Differential calculus and integral calculus considered as a single subject.
   • Near-synonyms: analysis, mathematical analysis

   Synonyms:

   infinitesimal calculus, analysis, mathematical analysis

4. (countable) A stony concretion that forms in a bodily organ.
   • Commonly indicated for treatment of sour crop (Fig. 11-11, A), an ingluviotomy is done to retrieve crop calculi, ingluvioliths, or foreign bodies (which are not accessible per os) or to retrieve proventricular or ventricular foreign bodies (using micromagnets [glued in place within plastic tubes]...2015, Jaime Samour, Avian Medicine, page 297

   Synonyms:

   stone

5. (uncountable) Deposits of calcium phosphate salts on teeth.

   Synonyms:

   dental calculus, tartar

6. (countable) A decision-making method, especially one appropriate for a specialised realm.
   • The Tory leader refused to state how many financiers he thought should end up in jail, saying: “There is not some simple calculus."2008 December 16, “Cameron calls for bankers’ ‘day of reckoning’”, in Financial Times