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
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
While their experiments so far were done with a two-dimensional planar electrode, most industrial reactions are run in three-dimensional vessels filled with powders.
From Science Daily ● Feb. 15, 2024
The planar structure of 2D nanosheets exhibit unique mechanical and optical properties, making them versatile in semiconductor devices, catalysts, sensors, and many other sectors.
From Science Daily ● Feb. 2, 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
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.
