x-axis
Americannoun
plural
x-axes-
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.
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.
It is possible for a point to be on the x-axis or on the y-axis and therefore is considered to NOT be in one of the quadrants.
From Textbooks • Dec. 21, 2021
Notice that when the term is positive, the transverse axis is on the x-axis.
From Textbooks • Sep. 23, 2020
It is symmetric about the x-axis, y-axis, and the origin.
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
The angle between i and the x-axis is 90 degrees.
From "Zero: The Biography of a Dangerous Idea" by Charles Seife
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.
