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 ]

a. [ Gr. 'a`kros summit + L. petere to seek. ] (Bot.) Developing from below towards the apex, or from the circumference towards the center; centripetal; -- said of certain inflorescence. [ 1913 Webster ]

n. [ Gr. 'a`kros extreme + &unr_; sound. ] The use of a picture symbol of an object to represent phonetically the initial sound of the name of the object. [ 1913 Webster ]

‖n. [ Gr. 'a`kros topmost + poy`s, podo`s, foot. ] (Zool.) The entire upper surface of the foot. [ 1913 Webster ]

n. [ Gr. 'akro`polis; 'a`kros extreme + po`lis city. ] The upper part, or the citadel, of a Grecian city; especially, the citadel of Athens. [ 1913 Webster ]

a. Pertaining to an acropolis. [ 1913 Webster ]

adj. 1. stimulating or acting on the adrenal cortex [ WordNet 1.5 ]

n. 1. a growth hormone produced by the anterior pituitary gland; it stimulates the adrenal cortex.
Syn. -- adrenocorticotropic hormone, adrenocorticotrophic hormone, adrenocorticotrophin, corticotropin, corticotrophin, ACTH [ WordNet 1.5 ]

a. [ Gr. &unr_; changeful + &unr_; a turning, &unr_; to turn. ] (Physics) Exhibiting differences of quality or property in different directions; having properties with different values along different axes; not isotropic. In specialized contexts, synonymous with anisotropic. [ Also spelled eolotropic. ] Sir W. Thomson.
Syn. -- [ 1913 Webster ]

n. (Physics) Difference of quality or property in different directions. [ 1913 Webster ]

{ ‖ } n. [ Aero- + Gr. fo`bos fear: cf. F. aérophobie. ] (Med.) Dread of a current of air or of fresh air. [ 1913 Webster + AS ]

n. [ Aëro- + Gr. &unr_; voice. ] (a) A form of combined speaking and ear trumpet. (b) An instrument, proposed by Edison, for greatly intensifying speech. It consists of a phonograph diaphragm so arranged that its action opens and closes valves, producing synchronous air blasts sufficient to operate a larger diaphragm with greater amplitude of vibration. [ Webster 1913 Suppl. ]

n. [ Aëro- + Gr. fyto`n plant, fy`ein to grow: cf. F. aérophyte. ] (Bot.) A plant growing entirely in the air, and receiving its nourishment from it; an air plant or epiphyte. [ 1913 Webster ]

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. 1. 1 an African fowl genus; both sexes are brightly colored.
Syn. -- Congo peafowl, Afropavo congensis [ WordNet 1.5 ]

n. A second crop or harvest in the same year. Mortimer. [ 1913 Webster ]

n. 1. [ agitation + propaganda. ] 1. agitation and propaganda; -- used especially for such activities carried out on behalf of communist activists. [ PJC ]

2. a person who disseminates messages calculated to assist some cause or some government; one disseminating agitprop{ 1 }. Also called agitpropist.
Syn. -- propagandist [ WordNet 1.5 +PJC ]

n. [ agitation + propaganda + -ist. ] same as agitprop{ 2 }. [ PJC ]

adv. & a. [ Pref. a- + grope. ] In the act of groping. Mrs. Browning. [ 1913 Webster ]

n. 1. 1 in some classifications considered the family comprising the giant pandas.
Syn. -- family Ailuropodidae. [ WordNet 1.5 ]

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

a. [ Gr. 'a`llos other + trophic. ] (a) (Physiol.) Changed or modified in nutritive power by the process of digestion. (b) (Plant Physiol.) Dependent upon other organisms for nutrition; heterotrophic; -- said of plants unable to perform photosynthesis, as all saprophytes; -- opposed to autotrophic. [ Webster 1913 Suppl. ]

{ } a. [ Cf. F. allotropique. ] Of or pertaining to allotropism. -- Al`lo*trop"ic*al*ly, adv. [1913 Webster]

Allotropic state, the several conditions which occur in a case of allotropism. [1913 Webster]

n. Allotropic property or nature. [ 1913 Webster ]

v. t. To change in physical properties but not in substance. [ R. ] [ 1913 Webster ]

{ } n. [ Gr. &unr_; other + direction, way, &unr_; to turn: cf. F. allotropie. ] (Chem.) The property of existing in two or more conditions which are distinct in their physical or chemical relations. [ 1913 Webster ]

☞ Thus, carbon occurs crystallized in octahedrons and other related forms, in a state of extreme hardness, in the diamond; it occurs in hexagonal forms, and of little hardness, in black lead; and again occurs in a third form, with entire softness, in lampblack and charcoal. In some cases, one of these is peculiarly an active state, and the other a passive one. Thus, ozone is an active state of oxygen, and is distinct from ordinary oxygen, which is the element in its passive state. [ 1913 Webster ]

n. a genus of epiphytic or terrestrial ferns of America and Africa and Polynesia.
Syn. -- genus Amauropelta. [ WordNet 1.5 ]

‖n. [ Gr. 'a`metros irregular + 'w`ps, 'wpo`s, eye. ] (Med.) A visual impairment resulting from faulty refraction of light rays in the eye. Subtypes include myopia astigmatism and hyperopia. -- Am`e*trop"ic a. AS [1913 Webster +PJC]

adj. Of or pertaining to ametropia. [ WordNet 1.5 ]

‖ [ F. ] Self-love; self-esteem. [ 1913 Webster ]

{ } a. [ Gr. 'amfi` + tre`pein to turn. ] (Bot.) Having the ovule inverted, but with the attachment near the middle of one side; half anatropous. [ 1913 Webster ]

‖n. pl. [ NL., from Gr. &unr_; without joints + -poda. See Anarthrous. ] (Zool.) One of the divisions of Articulata in which there are no jointed legs, as the annelids; -- opposed to Arthropoda. [ 1913 Webster ]

a. (Zool.) Having no jointed legs; pertaining to Anarthropoda. [ 1913 Webster ]

‖n. [ Gr. &unr_;, fr. &unr_; to turn up or back; 'ana` + &unr_; to turn. ] (Rhet. & Gram.) An inversion of the natural order of words; as, echoed the hills, for, the hills echoed. [ 1913 Webster ]

{ } a. [ Gr. &unr_; up + &unr_; to turn. ] (Bot.) Having the ovule inverted at an early period in its development, so that the chalaza is as the apparent apex; -- opposed to orthotropous. Gray. [ 1913 Webster ]

a. [ Gr. 'anh`r, 'andro`s, man + pe`talon leaf. ] (Bot.) Produced by the conversion of the stamens into petals, as double flowers, like the garden ranunculus. Brande. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'androfa`gos; 'anh`r, 'andro`s, man + fagei^n to eat. ] Cannibals; man-eaters; anthropophagi. [ R. ] [ 1913 Webster ]

a. Anthropophagous. [ 1913 Webster ]

n. [ Gr. 'anh`r, 'andro`s, man + fe`rein to bear. ] 1. (Bot.) A support or column on which stamens are raised. Gray. [ 1913 Webster ]

2. (Zool.) The part which in some Siphonophora bears the male gonophores. [ 1913 Webster ]

‖n. [ NL.; Gr. 'anh`r, 'andro`s, man + pw`gwn the beard. ] (Bot.) A very large and important genus of grasses, found in nearly all parts of the world. It includes the lemon grass of Ceylon and the beard grass, or broom sedge, of the United States. The principal subgenus is Sorghum, including Andropogon sorghum and Andropogon halepensis, from which have been derived the Chinese sugar cane, the Johnson grass, the Aleppo grass, the broom corn, and the durra, or Indian millet. Several East Indian species, as Andropogon nardus and Andropogon schœnanthus, yield fragrant oils, used in perfumery. [ Webster 1913 Suppl. ]

1. (Med.) Neuropathy of the neurons innervating blood vessels. Called also Angioneurosis, Vasomotor neurosis, Vasoneurosis. [ AS ]

2. (Med) Angiopathic neuropathy. [ AS ]

‖n. [ NL., fr. Gr. &unr_; + &unr_; measure + &unr_;, &unr_;, eye. ] Unequal refractive power in the two eyes. [ Webster 1913 Suppl. ]

{ } a. [ Gr. &unr_; unequal + &unr_; a turning, &unr_; to turn. ] (Physics) Not isotropic; having different properties in different directions; thus, crystals of the isometric system are optically isotropic, but all other crystals are anisotropic. [ 1913 Webster ]

a. Anisotropic. [ 1913 Webster ]

{ } a. [ Gr. &unr_;, fr. 'a`nqrwpos man. ] (Zool.) 1. Like or related to man; human. [ R. ] Owen. [ 1913 Webster ]

2. relating to the period of mankind's existence [ WordNet 1.5 ]

‖n. pl. [ NL., fr. Gr. 'a`nqrwpos man. ] (Zool.) The group that includes man only. [ 1913 Webster ]

a. [ Gr. 'a`nqrwpos man + &unr_; center. ] Assuming man as the center or ultimate end; -- applied to theories of the universe or of any part of it, as the solar system. Draper. [ 1913 Webster ]

n. 1. an inclination to evaluate reality exclusively in terms of human values.
Syn. -- anthropocentrism. [ WordNet 1.5 ]