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 the2: calculation3 a: a concretion usually of mineral salts around organic material found especially in hollow organs or ducts b: ¹tartar 24: a system or arrangement of intricate or interrelated parts