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arithmetic

UK/ә'riθmәtik/US
TOEFLB1

Definitions

n.

The branch of mathematics dealing with addition, subtraction, multiplication, and division of numbers.

算术(加减乘除的数学分支)。

adj.

Relating to arithmetic (often /ˌærɪθˈmetɪk/, as in arithmetic progression).

算术的(重音常移至第三音节,如 arithmetic progression 等差数列)。

Root Breakdown

Root-derived
arithmroot
+
-eticrelating to, having the nature of
=arithmetic

From Greek arithmos 'number' + -ikos (the -ic suffix) = 'relating to number,' i.e. the art of reckoning with numbers. The suffix marks it as a field; arithm carries 'number.'

Usage Guide

- Noun 'arithmetic' (the subject): stress on the 2nd syllable — a-RITH-me-tic.

- Adjective 'arithmetic' (arithmetic mean/progression): stress shifts to the 3rd syllable — a-rith-MET-ic.

Example Sentences

  • 1.

    Children learn basic arithmetic before moving on to algebra.

  • 2.

    She did the arithmetic in her head and found the error.

  • 3.

    The numbers increase in an arithmetic progression.

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