n. (Med.) A skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism. [ WordNet 1.5 ]

adj. (Med.) of or pertaining to achondroplasia. [ WordNet 1.5 ]

{ . } (Aëronautics) A small plane or surface, usually capable of adjustment but not of manipulation, for preserving lateral balance in an aëroplane or flying machine. [ Webster 1913 Suppl. ]

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. [ Amylum + -plastic. ] Starch-forming; amylogenic. [ Webster 1913 Suppl. ]

n. 1. loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor. [ WordNet 1.5 ]

a. Of or pertaining to anaplasty. [ 1913 Webster ]

n. [ Gr. &unr_; again + &unr_; to form: cf. F. anaplastie. ] (Surg.) The art of operation of restoring lost parts or the normal shape by the use of healthy tissue. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'a`noplos unarmed. ] (Zool.) One of the two orders of Nemerteans. See Nemertina. [ 1913 Webster ]

a. 1. Diminishing plasticity. [ 1913 Webster ]

2. (Med.) Preventing or checking the process of healing, or granulation. [ 1913 Webster ]

a. [ Pref. a- + placental. ] Belonging to the Aplacentata; without placenta. [ 1913 Webster ]

‖ n. pl. [ Pref. a- not + placenta. ] (Zool.) Mammals which have no placenta. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'a priv. + &unr_; a flat cake + fe`rein to bear. ] (Zool.) A division of Amphineura in which the body is naked or covered with slender spines or setæ, but is without shelly plates. [ 1913 Webster ]

n. 1. one of the aplacophora; a deep-water wormlike mollusk lacking calcareous plates on the body but having fine limy spicules on the covering mantle.
Syn. -- solenogaster [ WordNet 1.5 ]

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. ]

‖n. [ NL.; Gr. &unr_; priv. + &unr_; a molding. ] (Med.) 1. Incomplete or faulty development. [ Webster 1913 Suppl. ]

2. (Med.) a defect, retardation, or cessation of the process of generation of blood cells. [ PJC ]

a. [ Pref. a- not + plastic. ] Not plastic or easily molded. [ 1913 Webster ]

n. [ from aplasia{ 2 }. ] (Med.) an anemia characterized by substantial reduction or cessation of production of red blood cells and hemoglobin by the bone marrow. Stedman
Syn. -- Ehrlich's anemia; anemia gravis. [ PJC ]

v. t. [ imp. & p. p. Applauded; p. pr. & vb. n. Applauding. ] [ L. applaudere; ad + plaudere to clash, to clap the hands: cf. F. applaudir. Cf. Explode. ] 1. To show approval of by clapping the hands, acclamation, or other significant sign. [ 1913 Webster ]

I would applaud thee to the very echo,
That should applaud again. Shak. [ 1913 Webster ]

2. To praise by words; to express approbation of; to commend; to approve. [ 1913 Webster ]

By the gods, I do applaud his courage. Shak. [ 1913 Webster ]

Syn. -- To praise; extol; commend; cry up; magnify; approve. See Praise. [ 1913 Webster ]

v. i. To express approbation loudly or significantly. [ 1913 Webster ]

adj. 1. worthy of being applauded. [ WordNet 1.5 ]

n. One who applauds. [ 1913 Webster ]

a. Worthy of applause; praiseworthy. [ Obs. ] [ 1913 Webster ]

n. [ L. applaudere, applausum. See Applaud. ] The act of applauding; approbation and praise publicly expressed by clapping the hands, stamping or tapping with the feet, acclamation, huzzas, or other means; marked commendation. [ 1913 Webster ]

The brave man seeks not popular applause. Dryden. [ 1913 Webster ]

Syn. -- Acclaim; acclamation; plaudit; commendation; approval. [ 1913 Webster ]

a. [ LL. applausivus. ] Expressing applause; approbative. -- Ap*plau"sive*ly, adv. [1913 Webster]

n. [ See Archon; Plasma. ] (Biol.) The substance from which attraction spheres develop in mitotic cell division, and of which they consist. [ Webster 1913 Suppl. ]

a. Covered with defensive plates of metal, as a ship of war; steel-clad. [ 1913 Webster ]

This day will be launched . . . the first armor-plated steam frigate in the possession of Great Britain. Times (Dec. 29, 1860). [ 1913 Webster ]

adj. 1. 1 protected with a covering of armor.
Syn. -- steel-plated. [ WordNet 1.5 ]

a. Of or pertaining to autoplasty. [ 1913 Webster ]

n. [ Auto- + -plasty. ] (Surg.) The process of artificially repairing lesions by taking a piece of healthy tissue, as from a neighboring part, to supply the deficiency caused by disease or wounds. [ 1913 Webster ]

{ } n. [ Back, n. or a. + piece, plate. ] 1. A piece, or plate which forms the back of anything, or which covers the back. [ 1913 Webster ]

2. Specifically: A piece of plate armor protecting the back; -- it is worn as part of a cuirass. [ WordNet 1.5 ]

n. 1. an athlete who plays baseball.
Syn. -- baseball player. [ WordNet 1.5 ]

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

{ } n. (Mach.) The foundation framing or piece, by which the other parts are supported and held in place; the bed; -- called also baseplate and soleplate. [ 1913 Webster ]

‖ [ It. beneplacito pleasure, fr. L. bene well + placitus pleasing. ] 1. At or during pleasure. [ 1913 Webster ]

For our English judges there never was . . . any bene placito as their tenure. F. Harrison. [ 1913 Webster ]

2. (Mus.) At pleasure; ad libitum. [ 1913 Webster ]

v. t. [ imp. & p. p. Beplastered p. pr. & vb. n. Beplastering. ] To plaster over; to cover or smear thickly; to bedaub. [ 1913 Webster ]

Beplastered with rouge. Goldsmith. [ 1913 Webster ]

n. [ Gr. bi`os life + pla`sma form, mold, fr. pla`ssein to mold. ] (Biol.) A name suggested by Dr. Beale for the germinal matter supposed to be essential to the functions of all living beings; the material through which every form of life manifests itself; unaltered protoplasm. [ 1913 Webster ]

a. Pertaining to, or consisting of, bioplasm. [ 1913 Webster ]

n. [ Gr. bi`os life + pla`ssein to form. ] (Biol.) A tiny mass of bioplasm, in itself a living unit and having formative power, as a living white blood corpuscle; bioblast. [ 1913 Webster ]

a. (Biol.) Bioplasmic. [ 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. ]

n. The town, city, or country, where a person is born; place of origin or birth, in its more general sense. “The birthplace of valor.” Burns. [ 1913 Webster ]