planar
Americanadjective
-
of or relating to a plane
-
lying in one plane; flat
Other Word Forms
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.
OpenAI researchers’ proof—or really, disproof—of Erdős’s planar unit-distance problem is the kind of milestone that proponents of AI’s use in advanced mathematics have been waiting for.
From The Wall Street Journal ● Jun. 2, 2026
At the Tunguska site, researchers found shocked quartz showing clear planar fractures, some of which were filled with meltglass.
From Science Daily ● Dec. 19, 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 circular shape at its heart in this case comes from a ring of benzene, and it is termed planar because it comes in thin, tabular lamination shapes.
From Science Daily ● Nov. 14, 2024
Assuming there are fifteen grains per linear inch, there are 15 x 15 per planar inch and 153 grains per cubic inch.
From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos
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