planar
Americanadjective
-
of or relating to a plane
-
lying in one plane; flat
Other Word Forms
- planarity noun
Etymology
Origin of planar
1840–50; < Late Latin plānāris flat, of a level surface, equivalent to Latin plān ( um ) plane 1 + -āris -ar 1
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.
A new study by mathematicians at Freie Universität Berlin shows that planar tiling, also known as tessellation, is far more than a decorative technique.
From Science Daily • Jan. 7, 2026
To solve this problem, researchers at the Max Planck Institute in Mainz developed a planar electron tunneling spectroscopy method that can operate under these extreme pressures.
From Science Daily • Dec. 21, 2025
He had spent his life building a planar model of his ascent to the presidency, only to get whacked in the head by an unforeseen z-axis.
From Slate • Sep. 27, 2025
The structure of Inaoside A revealed a planar configuration.
From Science Daily • Mar. 11, 2024
It was composed of dazzling blue metal with an almost mirror shine to it, as smooth as water, and nowhere rectilinear or planar, but all flowing contours, as supple as skin.
From "Strange the Dreamer" by Laini Taylor
![]()
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.