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n. [ aëro- + plane. ] (Aëronautics) 1. A light rigid plane used in aërial 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; an airplane. 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 ]

n. One who flies in an aëroplane.
Syn. -- aviator, aviatrix, airman. [ Webster 1913 Suppl. ]

n. a heavier-than-air aircraft. Same as aeroplane{ 2 }. [ PJC ]

n. a propeller designed for propelling airplanes.
Syn. -- airscrew, propeller, prop. [ WordNet 1.5 +PJC ]

(Bot.) A plant deriving its sustenance from the air alone; an aërophyte. [ 1913 Webster ]

☞ The “Florida moss” (Tillandsia, many tropical orchids, and most mosses and lichens are air plants. Those which are lodged upon trees, but not parasitic on them, such as the Spanish moss Tillandsia usneoides), are epiphytes. [ 1913 Webster ]

. In hotels, aplan upon which guests pay for both room and board by the day, week, or other convenient period; -- contrasted with European plan. [ Webster 1913 Suppl. ]

a. [ Gr. 'a priv. + &unr_; disposed to wander, wandering, &unr_; to wander. ] (Opt.) Having two or more parts of different curvatures, so combined as to remove spherical aberration; -- said of a lens. [ 1913 Webster ]

Aplanatic focus of a lens (Opt.), the point or focus from which rays diverging pass the lens without spherical aberration. In certain forms of lenses there are two such foci; and it is by taking advantage of this fact that the best aplanatic object glasses of microscopes are constructed. [ 1913 Webster ]

n. Freedom from spherical aberration. [ 1913 Webster ]

n. (Bot.) A nonmotile gamete, found in certain lower algæ. [ Webster 1913 Suppl. ]

A plane used for cutting out grooves and inlaying strings and bands in straight and circular work. [ 1913 Webster ]

n. [ Pref. bi- + plane. ] (Aëronautics) An aëroplane with two main supporting surfaces one above the other. [ Webster 1913 Suppl. ]

a. (Aëronautics) Having, or consisting of, two superposed planes, aërocurves, or the like; of or pertaining to a biplane; as, a biplane rudder. [ Webster 1913 Suppl. ]

(Join.) A plane used for working the upper surface of staircase rails. [ 1913 Webster ]

a. See Coplanar. [ 1913 Webster ]

v. t. To make level. [ R. ] [ 1913 Webster ]

a. [ L. complanatus, p. p. of complanare to make plane. See Plane, v. t. ] Flattened to a level surface. [ R. ] [ 1913 Webster ]

n. Contemplation. [ Obs. ] Chaucer. [ 1913 Webster ]

a. [ L. contemplans, p. pr. ] Given to contemplation; meditative. [ R. ] Coleridge. [ 1913 Webster ]

. (Life Insurance) A plan of distributing surplus by giving to each policy the excess of premiums and interest earned thereon over the expenses of management, cost of insurance, and the policy value at the date of computation. This excess is called the contribution of the policy. [ Webster 1913 Suppl. ]

a. Convex on one side, and flat on the other; plano-convex. [ 1913 Webster ]

a. [ Pref. co- + plane. ] (Math.) Situated in one plane. [ 1913 Webster ]

n. [ Cop + land. ] A piece of ground terminating in a point or acute angle. [ Obs. ] [ 1913 Webster ]

a. [ L. deplanetus, p. p. of deplanare to make level. See Plane, v. t. ] (Bot.) Flattened; made level or even. [ 1913 Webster ]

v. t. [ Pref. de- + plan: cf. F. déplanter, L. deplantare to take off a twig. See Plant, v. t. ] To take up (plants); to transplant. [ R. ] [ 1913 Webster ]

n. [ Cf. F. déplantation. ] Act of taking up plants from beds. [ 1913 Webster ]

a. [ Pref. di- + plane. ] (Math.) Of or pertaining to two planes. [ 1913 Webster ]

v. t. [ imp. & p. p. Displanted; p. pr. & vb. n. Displanting. ] [ Pref. dis- + plant: cf. OF. desplanter, F. déplanter. ] 1. To remove (what is planted or fixed); to unsettle and take away; to displace; to root out; as, to displant inhabitants. [ 1913 Webster ]

I did not think a look,
Or a poor word or two, could have displanted
Such a fixed constancy. Beau. & Fl. [ 1913 Webster ]

2. To strip of what is planted or settled; as, to displant a country of inhabitants. Spenser. [ 1913 Webster ]

n. The act of displanting; removal; displacement. Sir W. Raleigh. [ 1913 Webster ]

n. A plane on a door, giving the name, and sometimes the employment, of the occupant. [ 1913 Webster ]

(Bot.) A Central American orchid (Peristeria elata), having a flower stem five or six feet high, with numerous globose white fragrant flowers. The column in the center of the flower resembles a dove; -- called also Holy Spirit plant. [ 1913 Webster ]

n. 1. (Bot.) A plant (Solanum Melongena), of East Indian origin, allied to the tomato, and bearing a large, glossy, edible fruit, shaped somewhat like an egg; mad-apple. It is widely cultivated for its fruit, commonly eaten as a vegetable.
Syn. -- eggplant, aubergine, brinjal, eggplant bush, garden egg, mad apple, Solanum melongena. [ 1913 Webster + WordNet 1.5 ]

2. The fruit of the eggplant{ 1 }. [ PJC ]

n. [ F. esplanade, Sp. esplanada, explanada, cf. It. spianata; fr. Sp. explanar to level, L. explanare to flatten or spread out. See Explain. ] 1. (Fort.) (a) A clear space between a citadel and the nearest houses of the town. Campbell (Mil. Dict. ). (b) The glacis of the counterscarp, or the slope of the parapet of the covered way toward the country. [ 1913 Webster ]

2. (Hort.) A grass plat; a lawn. Simmonds. [ 1913 Webster ]

3. Any clear, level space used for public walks or drives; esp., a terrace by the seaside. [ 1913 Webster ]

a. [ L. explanatus, p. p. of explanare. See Explain. ] (Bot. & Zoöl.) Spreading or extending outwardly in a flat form. [ 1913 Webster ]

n. [ L. explanatio: cf. OF. esplanation. ] 1. The act of explaining, expounding, or interpreting; the act of clearing from obscurity and making intelligible; as, the explanation of a passage in Scripture, or of a contract or treaty. [ 1913 Webster ]

2. That which explains or makes clear; as, a satisfactory explanation. [ 1913 Webster ]

3. The meaning attributed to anything by one who explains it; definition; interpretation; sense. [ 1913 Webster ]

Different explanations [ of the Trinity ]. Bp. Burnet. [ 1913 Webster ]

4. A mutual exposition of terms, meaning, or motives, with a view to adjust a misunderstanding, and reconcile differences; reconciliation; agreement; as, to come to an explanation.

Syn. -- Definition; description; explication; exposition; interpretation; detail. See Definition. [ 1913 Webster ]

a. Explanatory. [ 1913 Webster ]

n. The quality of being explanatory. [ 1913 Webster ]

a. [ L. explanatorius. ] Serving to explain; containing explanation; as explanatory notes. Swift.

n. (Bot.) A plant in new Zealand (Phormium tenax), allied to the lilies and aloes. The leaves are two inches wide and several feet long, and furnish a fiber which is used for making ropes, mats, and coarse cloth. [ 1913 Webster ]

n. a plane equipped with pontoons for landing or taking off from water.
Syn. -- pontoon plane, seaplane. [ WordNet 1.5 ]

n. A plan for achieving an objective (especially in some sport). [ WordNet 1.5 ]

. (Agric.) A plant which aids, shelters, or protects another plant in its growth, as those which are used for nurse crops. [ Webster 1913 Suppl. ]

n. any of a variety of plants grown indoors for decorative purposes. [ WordNet 1.5 ]

. (Aëronautics) An aëroplane with a boatlike or other understructure that enables it to travel on, or to rise from the surface of, a body of water by its own motive power; -- now usually referred to as a seaplane. [ obsolescent ] [ Webster 1913 Suppl. +PJC ]

n. A hydro-aëroplane having two supporting planes. [ Webster 1913 Suppl. ]

n. [ Pref. hydro-, 1 + plane. ] 1. A plane, or any of a number of planes, projecting from the hull of a submarine boat, which by being elevated or depressed cause the boat, when going ahead, to sink or rise, after the manner of an aëroplane. [ Webster 1913 Suppl. ]

2. A projecting plane or fin on a hydroplane{ 3 } to lift the moving boat on top of the water; also, a gliding boat. [ Webster 1913 Suppl. ]

3. a powered surface boat fitted with planes (hydroplanes{ 2 }) projecting below the hull, designed to lift the boat, when moving rapidly, so that the hull itself is lifted out of the water and the boat is supported by the hydrodynamic forces of the water on the hydroplanes{ 2 }, thus permitting higher speeds; formerly called a gliding boat. [ Webster 1913 Suppl. +PJC ]

v. i. 1. Of a boat, to move through water while supported by hydroplanes{ 3 } (see hydroplane{ 3 }, above). [ Webster 1913 Suppl. ]

2. to move through a body of water supported by the hydrodynamic forces on a surface, similar in principle to a hydroplane{ 3 }; -- said, e. .g, of automobiles skidding on a shallow patch of water on a road when moving at high speed, thus causing the tires to lose contact with the road surface. [ PJC ]

(Bot.) A plant (Mesembryanthemum crystallinum), sprinkled with pellucid, watery vesicles, which glisten like ice. It is native along the Mediterranean, in the Canaries, and in South Africa. Its juice is said to be demulcent and diuretic; its ashes are used in Spain in making glass. [ 1913 Webster ]

pos>v. t. [ imp. & p. p. Implanted; p. pr. & vb. n. Implanting. ] [ Pref. im- in + plant: cf. F. implanter. ] To plant, or infix, for the purpose of growth; to fix deeply; to instill; to inculate; to introduce; as, to implant the seeds of virtue, or the principles of knowledge, in the minds of youth. [ 1913 Webster ]

Minds well implanted with solid . . . breeding. Milton. [ 1913 Webster ]