y-ax·​is ˈwī-ˌak-səs How to pronounce y-axis (audio)
: the axis of a plane Cartesian coordinate system parallel to which ordinates are measured
: one of the three axes in a three-dimensional rectangular coordinate system

Examples of y-axis in a Sentence

Recent Examples on the Web So the y-axis is more stable, as the shift toward females in the labor market is balanced by a higher proportion going to university. Razib Khan, Discover Magazine, 5 Sep. 2010 Both plots were sourced from the same dataset and should thus be identical—but the plot in one paper has a y-axis with a scale that is about 7,000 times larger than the other. Dan Garisto, Scientific American, 27 July 2023 The y-axis shows the speedup for Codon implementations over CPython implementations. IEEE Spectrum, 30 Mar. 2023 Fewer births means the percentage of the population of working age (15-64), represented here in the y-axis, climbs upward toward the rough threshold of the 65 percent necessary to potentially reap the economic benefits of the demographic dividend. National Geographic, 21 Mar. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'y-axis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1875, in the meaning defined at sense 1

Time Traveler
The first known use of y-axis was in 1875

Dictionary Entries Near y-axis

Cite this Entry

“Y-axis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/y-axis. Accessed 19 Jun. 2024.

Kids Definition


: the vertical axis in a plane coordinate system along which or parallel to which ordinates are measured compare x-axis
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