number line
noun
Definition of number line
: a line of infinite extent whose points correspond to the real numbers according to their distance in a positive or negative direction from a point arbitrarily taken as zero
1956
First Known Use of number line
1956
NUMBER LINE Defined for Kids
number line
noun
Definition of number line for Students
: a line in which points are matched to numbers
Learn More about number line
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Britannica.com: Encyclopedia article about number line
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