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calculus

UK/'kælkjulәs/US
GREC1

Definitions

n.

The branch of mathematics dealing with rates of change (differentiation) and accumulation (integration).

微积分学。

n.

A hard stone-like deposit that forms in the body, such as a kidney stone or dental tartar.

结石;牙石(体内形成的石状沉积物)。

n.

A particular method or system of reasoning or calculation.

(某种)演算法,推理体系。

Root Breakdown

Root-derived
calculpebble, stone; to reckon
+
-ussuffix
=calculus

Latin calculus literally means 'small pebble' (diminutive of calx, limestone). Because Romans counted with pebbles, the word came to mean 'reckoning,' then named the high-level mathematics of change. The medical sense (a calculus = a stone in the body) keeps the literal 'little stone.'

Root calc still carries 6 more words

Why It Means This

The leap from 'pebble' to 'hardest math' is the whole story of this root. A calculus was just a counting stone; over centuries 'doing calculus' meant 'doing reckoning,' and when Newton and Leibniz built a powerful new system for handling change, the old word for pebble-counting was reused for it. Meanwhile the literal sense survived in medicine — a kidney calculus really is a little stone — showing both ends of the word's life in one entry.

Common Collocations

  • 1.differential calculus微分学
  • 2.integral calculus积分学
  • 3.calculus course微积分课程
  • 4.renal calculus肾结石

Example Sentences

  • 1.

    She's taking calculus and physics this semester.

  • 2.

    Newton and Leibniz independently invented calculus.

  • 3.

    The dentist removed the calculus built up on his teeth.

Word Forms

Noun

Pluralcalculi / calculuses
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