- an airplane or a hydroplane: to take a plane to Dallas.
- a thin, flat or curved, extended section of an airplane or a hydroplane, affording a supporting surface.
verb (used without object), planed, plan·ing.
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Origin of plane1
OTHER WORDS FROM planeplaneness, noun
Words nearby plane
Definition for plane (2 of 3)
verb (used with object), planed, plan·ing.
verb (used without object), planed, plan·ing.
Origin of plane2
Definition for plane (3 of 3)
Origin of plane3
What does plane mean?
Think of a flat sheet of paper. A physical sheet of paper has three dimensions: length, width, and (a small) height. If that sheet of paper had zero height and its length and width extended forever, it would be a plane. Obviously, such a shape is theoretical—it’s used as a basis for geometric calculations.
A plane is one of several basic concepts students need to begin to understand geometry. Another is a point. Unlike a plane, it has no dimensions, such as length or width. It is found by using coordinates. A third concept is a line. Like a plane, a line also extends forever but only in two directions.
Understanding what a plane is matters because angles and two-dimensional shapes, such as squares, triangles, and circles, are represented as points, lines, and line segments on a plane. It also helps you understand three-dimensional space and three-dimensional objects, which have height as well as length and width. Plane has several other meanings, some of which have different roots. More generally, it can refer to any flat or level surface.
Why is plane important?
The first records of the word plane in a mathematical sense come from the early 1600s. It comes from the Latin plānum, meaning “flat surface,” which is a noun formed from the Latin adjective plānus, meaning “flat.”
Planes and many other basics of geometry are often credited to the Greek mathematician Euclid, who lived around the year 300 B.C. Euclid developed the idea of a plane, along with other fundamental concepts of geometry, such as points, lines, and two-dimensional shapes. All two-dimensional geometry exists on a plane. Because of this, geometry that deals with two-dimensional shapes is called plane geometry.
The other major type of geometry is solid geometry, which involves three-dimensional space and shapes, such as cubes and cylinders.
Did you know ... ?
Euclid’s conception of geometry, known as Euclidean geometry, provided almost the entire foundation of geometry for over 2,000 years until mathematicians explored non-Euclidean geometry in the 1800s.
What are real-life examples of plane?
We encounter planes all the time in everyday life, even though we might not use geometric terms to describe them.
Should I continue studying statistics or should I study plane geometry? pic.twitter.com/SxfFKgRL2i
— aq lang to si joysan (@luciengf__) May 23, 2020
Very cool moment in Plane Geometry today when some of my students starting investigating the Golden Ratio with their own proportions! They started measuring the proportion of their hand to their forearm to discover the Golden Ratio in human anatomy for themselves. #207Learn pic.twitter.com/goEYAMOSrc
— Sarah Kendeigh (@KendeighSarah) January 30, 2020
Learning Three.js by recreating Matt Shlian's sculptures. https://t.co/XKRXY1R0FE
Process so far:
Start with a plane geometry.
Subdivide it to create sculpture like geometry.
Use normals to colour the faces. pic.twitter.com/JuJxKJZtaP
— Varun Vachhar (@winkerVSbecks) June 7, 2020
In geometry, a plane is a two-dimensional surface with:
A. infinite width and height.
B. infinite width and length.
C. infinite length and height.
D. infinite width, length, and height.
Example sentences from the Web for plane
Pilots are well aware that fierce vortices form at the wingtips of accelerating planes and separate from there.An Unexpected Twist Lights Up the Secrets of Turbulence|David H. Freedman|September 3, 2020|Quanta Magazine
Wengfeng Lu is arrested before boarding a plane to China, where he planned to start a company copying medical-device technology he stole from two previous employers.A brief history of US-China espionage entanglements|Konstantin Kakaes|September 3, 2020|MIT Technology Review
When operating, El Al’s planes have had to run a dogleg route to Mumbai, for example, down the Red Sea and up the Gulf of Aden to avoid Saudi airspace.Israel’s El Al Airlines makes historic flight through Saudi airspace en route to UAE|Bernhard Warner|August 31, 2020|Fortune
After five years cleaning planes at LAX, and never flying on one of them, I’d finally learned what my grandmother meant when she said that your job is temporary, and your education is forever.What I learned from 5 years of cleaning airplanes in the middle of the night|matthewheimer|August 30, 2020|Fortune
One of the biggest impediments to self-flying planes is regulation, so the two founders tried to figure out how they could convince the FAA to approve unmanned flights without having to modify any existing regulations.Cessna makes history by taking off and landing with no one aboard. Here’s how|Jeremy Kahn|August 26, 2020|Fortune
Chérif was arrested in Paris in January 2005 as he was about to board a plane to Damascus along with a man named Thamer Bouchnak.
As we waited for my plane to come in, we stayed silent for a long time.
And then I got on a plane, and guess what was playing: I Never Sang for My Father.
“Call me when the plane leaves the ground,” she said, in a tone that implied she knew her husband well.Mario Cuomo, a Frustrating Hero to Democrats, Is Dead at 82|Eleanor Clift|January 2, 2015|DAILY BEAST
On Monday, Soelistyo had jolted relatives as well as searchers by suggesting that the plane could be “at the bottom of the sea.”
The sequestered spot, a seat beneath a plane tree, with a lonesome arc-lamp shining full upon it, was occupied.The Joyous Adventures of Aristide Pujol|William J. Locke
Hence the latter is not level, but has, in places, steps which have been worn to an inclined plane.The Catacombs of Rome|William Henry Withrow
Therefore the families were strong, united, sound, resisting the storm like a line of plane trees!Frdric Mistral|Charles Alfred Downer
Then he shaved this side of the block, then the other side, with a plane, a tool with a very sharp edge.Seven O'Clock Stories|Robert Gordon Anderson
Here was another plane of existence where the machinations of men seemed to matter little.Mystery Ranch|Arthur Chapman
British Dictionary definitions for plane (1 of 3)
- short for aeroplane
- a wing or supporting surface of an aircraft or hydroplane