plane
aeroplane aer"*o*plane` aeroplane a"["e]r*o*plane`, n. [a["e]ro- + plane.] (A["e]ronautics) 1. A light rigid plane used in a["e]rial navigation to oppose sudden upward or downward movement in the air, as in gliding machines; specif., such a plane slightly inclined and driven forward as a lifting device in some flying machines. Also called {airfoil}. [Webster 1913 Suppl.]

2. hence, a heavier-than-air flying machine using such a device to provide lift. In a modern aeroplane, the airfoils are called the {wings}, and most of the lift is derived from these surfaces. In contrast to helicopters, the wings are fixed to the passenger compartment (airframe) and do not move relative to the frame; thus such a machine is called a {fixed-wing aircraft}. These machines are called monoplanes, biplanes, triplanes, or quadruplanes, according to the number of main supporting planes (wings) used in their construction. After 1940 few planes with more than one airfoil were constructed, and these are used by hobbyists or for special purposes. Being heavier than air they depend for their levitation on motion imparted by the thrust from either propellers driven by an engine, or, in a jet plane, by the reaction from a high-velocity stream of gases expelled rearward from a jet engine. They start from the ground by a run on small wheels or runners, and are guided by a steering apparatus consisting of horizontal and vertical movable planes, which usually form part of the wings or tail. There are many varieties of form and construction, which in some cases are known by the names of their inventors. In U.S., an aeroplane is usually called an {airplane} or {plane}. [Webster 1913 Suppl. +PJC]


The Collaborative International Dictionary of English. 2000.

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  • plané — plane [ plan ] n. f. • XIVe; plaine XIIe; réfect., d apr. le v. planer, de l a. fr. plaine, bas lat. plana ♦ Techn. Outil formé d une lame tranchante et de deux poignées, appelé aussi couteau à deux manches, qui sert à aplanir, à dégrossir une… …   Encyclopédie Universelle

  • Plane — Plane, a. [L. planus: cf. F. plan. See {Plan}, a.] Without elevations or depressions; even; level; flat; lying in, or constituting, a plane; as, a plane surface. [1913 Webster] Note: In science, this word (instead of plain) is almost exclusively… …   The Collaborative International Dictionary of English

  • Plane — Plane, n. [F. plane, L. plana. See {Plane}, v. & a.] 1. (Geom.) A surface, real or imaginary, in which, if any two points are taken, the straight line which joins them lies wholly in that surface; or a surface, any section of which by a like… …   The Collaborative International Dictionary of English

  • plane — 1. (pla n ) s. m. Nom vulgaire donné à une espèce d érable que les botanistes appellent érable plane, acer platanoides, L. •   Des gazons émaillés l ornaient [une fontaine] tout alentour ; Un plane l ombrageait de son vaste contour, SÉNECÉ… …   Dictionnaire de la Langue Française d'Émile Littré

  • plane — UK US /pleɪn/ noun [C] ► an aircraft with wings and one or more engines: a plane for/to/from sth »I ll get the next plane to London. on/in a plane »He s on a plane at the moment, on his way to Chicago. a plane leaves/takes off/lands »The plane… …   Financial and business terms

  • plane — plane1 [plān] n. [ME < MFr plasne < L platanus < Gr platanos < platys, broad (see PLATY ): from its broad leaves] any of a genus (Platanus) of trees of the plane tree family having maplelike leaves, spherical dry fruits, and bark that …   English World dictionary

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