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
Noun Inflected 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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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.
We will see complex solutions when we solve quadratic equations whose graph does not touch the x-axis.
From Textbooks ● Sep. 23, 2020
Notice that when the term is positive, the transverse axis is on the x-axis.
From Textbooks ● Sep. 23, 2020
Also, since the point is above the x-axis.
From Textbooks ● Sep. 23, 2020
Along the x-axis is the distance between the two atoms.
From Textbooks ● Feb. 14, 2019
The angle between i and the x-axis is 90 degrees.
From "Zero: The Biography of a Dangerous Idea" by Charles Seife
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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.