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.
-
(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
-
The horizontal axis of a two-dimensional Cartesian coordinate system.
-
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.
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
Yes, provided the two points are either both above the x-axis or both below the x-axis and have different x- coordinates.
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 number i3 is equal to –i—270 degrees from the x-axis; the angle has tripled.
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.
