x-axis
Americannoun
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Also called axis of abscissas. (in a plane Cartesian coordinate system) the axis, usually horizontal, along which the abscissa is measured and from which the ordinate is measured.
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(in a three-dimensional Cartesian coordinate system) the axis along which values of x are measured and at which both y and z equal zero.
noun
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The horizontal axis of a two-dimensional Cartesian coordinate system.
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One of the three axes of a three-dimensional Cartesian coordinate system.
Other Word Forms
Etymology
Origin of x-axis
First recorded in 1925–30
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Vocabulary lists containing x-axis
Expressions and Equations
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Geometry - Introductory
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Geometry - Middle School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The reflection about the x-axis, is shown on the left side of Figure 10, and the reflection about the y-axis is shown on the right side of Figure 10.
From Textbooks • Sep. 23, 2020
When graphing basic functions, we can scan the x-axis just as we read in English from left to right to help determine the domain.
From Textbooks • Sep. 23, 2020
Also, since the point is below the x-axis.
From Textbooks • Sep. 23, 2020
The x-axis goes from 32.5 to 100.5; the y-axis goes from –2.4 to 15 for the histogram.
From Textbooks • Mar. 27, 2020
But Katherine II came out all wrong—only touching the x-axis once.
From "An Abundance of Katherines" by John Green
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
