adj. 1. (Bot.) pinnate with a pair of leaflets at the apex, i.e. without an odd leaflet, or other appendage, at the end; -- said of a leaf shape
Syn. -- even-pinnate, paripinnate [ 1913 Webster + WordNet 1.5 ]

n. [ L. accipiens, p. pr. of accipere. See Accept. ] A receiver. [ R. ] Bailey [ 1913 Webster ]

‖n.; pl. E. Accipiters L. Accipitres [ L., hawk. ] 1. (Zool.) A genus of rapacious birds; one of the Accipitres or Raptores. [ 1913 Webster ]

2. (Surg.) A bandage applied over the nose, resembling the claw of a hawk. [ 1913 Webster ]

n. Pertaining to, or of the nature of, a falcon or hawk; hawklike. Lowell. [ 1913 Webster ]

‖n. pl. [ L., hawks. ] (Zool.) The order that includes rapacious birds. They have a hooked bill, and sharp, strongly curved talons. There are three families, represented by the vultures, the falcons or hawks, and the owls. [ 1913 Webster ]

n. 1. 1 a family of birds consisting of the hawks; -- this family includes the Old World vultures; kites; harriers; and eagles.
Syn. -- family Accipitridae. [ WordNet 1.5 ]

n. 1. 1 in some classifications an alternative name for the Falconiformes.
Syn. -- order Accipitriformes. [ WordNet 1.5 ]

a. [ Cf. F. accipitrin. ] (Zool.) Like or belonging to the Accipitres; raptorial; hawklike. [ 1913 Webster ]

a. [ Gr. 'a priv. + ko`pos striking. weariness, ko`ptein to strike. ] (Med.) Relieving weariness; restorative. AS [ 1913 Webster ]

n. [ Gr. &unr_; + &unr_; anything twisted. ] (Bot.) The sprout at the end of a seed when it begins to germinate; the plumule in germination; -- so called from its spiral form. [ 1913 Webster ]

v. i. To put forth the first sprout. [ 1913 Webster ]

n. 1. 1 extinct small mostly diurnal lower primates that fed on leaves and fruit; abundant in North America and Europe 30 to 50 million years ago; their descendents probably include the lemurs and lorises; some authorities consider them ancestral to anthropoids but others consider them only cousins.
Syn. -- Adapid group [ WordNet 1.5 ]

a. [ L. adeps, adipis, fat. ] (Chem.) Pertaining to, or derived from, fatty or oily substances; -- applied to certain acids obtained from fats by the action of nitric acid. [ 1913 Webster ]

an aliphatic dicarboxylic acid (HO.CO.(CH2)4.CO.OH), containing six carbon atoms in a linear chain. It is found in beet juice. It is used in the manufacture of synthetic plastics such as Nylon, as well as other products. [ PJC ]

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 ]

n. 1. an extinct primate of about 38 million years ago; -- fossils were found in Egypt. [ WordNet 1.5 ]

{ } n. [ L. aeolipilae; Aeolus god of the winds + pila a ball, or Gr. &unr_; gate (i. e., doorway of Æolus); cf. F. éolipyle. ] An apparatus consisting chiefly of a closed vessel (as a globe or cylinder) with one or more projecting bent tubes, through which steam is made to pass from the vessel, causing it to revolve. [ Written also eolipile. ] [ 1913 Webster ]

☞ Such an apparatus was first described by Hero of Alexandria about 200 years b. c. It has often been called the first steam engine. [ 1913 Webster ]

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 ]

a. Pertaining to Æsculapius or to the healing art; medical; medicinal. [ 1913 Webster ]

n. [ L. Aesculapius, Gr. &unr_;. ] (Myth.) The god of medicine. Hence, a physician. [ 1913 Webster ]

a. [ L. Aesopius, from Gr. &unr_;, fr. the famous Greek fabulist Æsop ] Of or pertaining to Æsop, or in his manner. [ 1913 Webster ]

n. 1. A piece performed after a play, usually a farce or other small entertainment. [ 1913 Webster ]

2. (Naut.) The heel of a rudder. [ 1913 Webster ]

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

A pipe for the passage of air; esp. a ventilating pipe. [ 1913 Webster ]

a. [ Gr. 'a priv. + &unr_;, &unr_;, a scale. ] (Zool.) Not having scales. -- n. A fish without scales. [ 1913 Webster ]

{ } 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. The berry of the pimento (Eugenia pimenta), a tree of the West Indies; a spice of a mildly pungent taste, and agreeably aromatic; Jamaica pepper; pimento. It has been supposed to combine the flavor of cinnamon, nutmegs, and cloves; and hence the name. The name is also given to other aromatic shrubs; as, the Carolina allspice (Calycanthus floridus); wild allspice (Lindera benzoin), called also spicebush, spicewood, and feverbush. [ 1913 Webster ]

n. 1. 1 a family of fish comprising the thresher sharks.
Syn. -- family Alopiidae. [ WordNet 1.5 ]

n. 1. 1 type genus of the family Alopiidae; in some classifications considered a genus of the family Lamnidae.
Syn. -- genus Alopius [ WordNet 1.5 ]

{ } n. [ F.: cf. Sp. & Pg. alpiste. ] The seed of canary grass (Phalaris Canariensis), used for feeding cage birds. [ 1913 Webster ]

a. [ L. Alpes Alps + -gen. ] Growing in Alpine regions. [ 1913 Webster ]

a. [ L. Alpinus, fr. Alpes the Alps: cf. F. Alpin. ] 1. Of or pertaining to the Alps, or to any lofty mountain; as, Alpine snows; Alpine plants. [ 1913 Webster ]

2. Like the Alps; lofty. “Gazing up an Alpine height.” Tennyson. [ 1913 Webster ]

n. 1. 1 a genus of perennial rhizomatous herbs of Asia and Australia and Polynesia having ginger-scented rhizomes.
Syn. -- genus Alpinia, genus Zerumbet, genus Languas. [ WordNet 1.5 ]

n. A climber of the Alps. [ 1913 Webster ]

n. The painting or piece of sculpture above and behind the altar; reredos. [ 1913 Webster ]

a. (Med.) Of or pertaining to amblyopia. Quain. AS [ 1913 Webster ]

{ ‖ } n. [ Gr. 'amblywpi`a; 'ambly`s blunt, dim + 'w`ps eye: cf. F. amblyopie. ] (Med.) Weakness of sight, without any detectable organic lesion. [ 1913 Webster + AS ]

(Bot.) The resiniferous tree Agathis Dammara, of the Moluccas. [ Webster 1913 Suppl. ]

‖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 ]

{ } a. [ Gr. 'amfi` + karpo`s fruit. ] (Bot.) Producing fruit of two kinds, either as to form or time of ripening. [ 1913 Webster ]

n. 1. a semisynthetic penicillin which can be considered as the common benzylpenicillin containing an amino group at the alpha benzyl position. It is more active against certain gram-negative bacteria than is benzylpenicillin. It found wide use in treatment of bacterial infections, and has been sold under many trade names.
Syn. -- D(-)-α-aminobenzylpenicillin. [ WordNet 1.5 ]

{ } a. [ L. anceps, ancipitis, two-headed, double; an- for amb- on both sides + caput head. ] (Bot.) Two-edged instead of round; -- said of certain flattened stems, as those of blue grass, and rarely also of leaves. [ 1913 Webster ]

adj. 1. 1 of or pertaining to an angiocarp; angiocarpous.
Syn. -- angiocarpous [ WordNet 1.5 ]

‖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 ]