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.

number line

noun

an infinite line on which points represent the real numbers

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Word History and Origins

Origin of number line¹

First recorded in 1955–60

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Example Sentences

Examples have not been reviewed.

For example, the number line is infinite, regardless of whether you start it at –∞, 0 or 1.

From

Even such bonkers-looking numbers, however, together with all the rational numbers, make up only a tiny fraction of the real numbers, or numbers that can appear along a number line.

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But it turns out that if you happened to pick out a number at random on a number line, you would almost certainly draw a “noncomputable” number.

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The rest of the numbers on the number line are irrational numbers.

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Imagine that the number line is a rubber band with tick marks on it.

From

numberless number off

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