Definition of number line in English:

number line

Syllabification: num·ber line


  • A line on which numbers are marked at intervals, used to illustrate simple numerical operations.
    More example sentences
    • The ordinary numbers (or real numbers as mathematicians call them) sat on the number line running East-West in this map of imaginary numbers, while the North-South direction corresponded to the imaginary part.
    • These jumps from one number to the next can be visualized as arcs of circles along a number line.
    • The findings suggest that understanding relationships among numbers involves some sort of spatial tool, such as visualizing a number line.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody