# number line

### noun Mathematics.

a straight line on which there is indicated a one-to-one correspondence between points on the line and the set of real numbers.

## Origin of number line

First recorded in 1955–60

Also called real line.

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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## number line

### noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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