plane - (mathematics) an unbounded two-dimensional shape; "we will refer to the plane of the graph as the X-Y plane"; "any line joining two points on a plane lies wholly on that plane" sheet shape , form - the spatial arrangement of something as distinct from its substance; "geometry is the mathematical science of shape"
A plane is a vehicle that flies through the air, but it is also a tool used to make something smooth and flat, a kind of tree or a level surface. As a verb, to plane something is to make it flat and smooth.
17 synonyms of plane from the Merriam-Webster Thesaurus, plus 79 related words, definitions, and antonyms. Find another word for plane. Plane: a vehicle for traveling through the air that has fixed wings for lift.
PLANE | meaning in the Cambridge English Dictionary
A plane is a two-dimensional doubly ruled surface spanned by two linearly independent vectors. The generalization of the plane to higher dimensions is called a hyperplane. The angle between two intersecting planes is known as the dihedral angle. The equation of a plane with nonzero normal vector n=(a,b,c) through the point x_0=(x_0,y_0,z_0) is n·(x-x_0)=0, (1) where x=(x,y,z).
airplane | Definition, Types, Mechanics, & Facts | Britannica
airplane, also called aeroplane or plane, any of a class of fixed-wing aircraft that is heavier than air, propelled by a screw propeller or a high-velocity jet, and supported by the dynamic reaction of the air against its wings. For an account of the development of the airplane and the advent of civil aviation see history of flight.. The essential components of an airplane are a wing system to ...
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The definition of a plane is a woodworking tool that removes wood to create a flat surface, or the shortened form of the word airplane. An example of a plane is the tool used to smooth the sides of doors to make them close more easily. An example of a plane is an airplane that flys from New York to San Francisco. To plane is to make smooth or even.
Etymology and usage. First attested in English in the late 19th century (prior to the first sustained powered flight), the word airplane, like aeroplane, derives from the French aéroplane, which comes from the Greek ἀήρ (aēr), "air" and either Latin planus, "level", or Greek πλάνος (planos), "wandering".