Main Entry: cal·cu·lus

Pronunciation: \-ləs\

Function: noun

Inflected Form(s): plural cal·cu·li \-ˌlī, -ˌlē\ also cal·cu·lus·es

Etymology: Latin, stone (used in reckoning)

Date: 1666

1 a : a method of computation or calculation in a special notation (as of logic or symbolic logic) b : the mathematical methods comprising differential and integral calculus —often used with the
2 : calculation
3 a : a concretion usually of mineral salts around organic material found especially in hollow organs or ducts b : ¹tartar 2
4 : a system or arrangement of intricate or interrelated parts