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. [ Gr. boy^s ox + ke`ntayros centaur. ] 1. A fabulous monster, half ox, half man. [ 1913 Webster ]

2. [ It. bucentoro. ] The state barge of Venice, used by the doge in the ceremony of espousing the Adriatic. [ 1913 Webster ]

n. Rate by the hundred; percentage. [ 1913 Webster ]

n. [ L. centum a hundred. ] A weight of one hundred pounds avoirdupois; -- called in many parts of the United States a Hundredweight. [ 1913 Webster ]

n. Relating to a hundred. [ 1913 Webster ]

Cental system, the method of buying and selling by the cental, or hundredweight. [ 1913 Webster ]

n. [ F. centiare; centi- (L. centum) + -are. ] A measure of area, the hundredth part of an are; one square meter, or about 11/5 square yards. [ 1913 Webster ]

n. [ L. centaurus, Gr. Ke`ntayros. ] [ 1913 Webster ]

1. (Class. Myth.) A fabulous being, represented as half man and half horse. [ 1913 Webster ]

2. (Astron.) A constellation in the southern heavens between Hydra and the Southern Cross. [ 1913 Webster ]

‖prop. n. [ NL. See Centaury. ] (Bot.) A large genus of composite plants, related to the thistles and including the cornflower or bluebottle (Centaurea Cyanus) and the star thistle (Centaurea Calcitrapa). [ 1913 Webster ]

prop. n. A genus of low-growing herbs mostly of the northern hemisphere having flowers with protruding spirally twisted anthers.
Syn. -- genus Centaurium. [ WordNet 1.5 ]

n. [ Gr. &unr_;; &unr_; centaur + &unr_; battle. ] (Ancient Art) A fight in which centaurs take part, -- a common theme for relief sculpture, as in the Parthenon metopes. [ Webster 1913 Suppl. ]

n. a conspicuous constellation in the southern hemisphere near the Southern Cross.
Syn. -- Centaur, The Centaur. [ WordNet 1.5 ]

n. [ L. centaureum and centauria, Gr. kentay`rion, kentay`reion, and kentayri`h, fr. the Centaur Chiron. ] (Bot.) A gentianaceous plant not fully identified. The name is usually given to the Erytheræa Centaurium and the Chlora perfoliata of Europe, but is also extended to the whole genus Sabbatia, and even to the unrelated Centaurea. [ 1913 Webster ]

n. a fractional monetary unit of several countries such as El Salvador, St. Thomas and Principe, Brazil, Argentina, Bolivia, Colombia, Cuba, the Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Peru, the Philippines, and Portugal. [ WordNet 1.5 ]

n. [ L. hippocentaurus, Gr. &unr_;; "i`ppos horse + &unr_; centaur.] (Myth.) Same as Centaur. [1913 Webster]

a. (Zool.) Without a placenta, as marsupials and monotremes; nonplacental. -- n. A mammal having no placenta; a nonplacental mammal. [ 1913 Webster ]

‖n. pl. [ NL. See In- not, and Placental. ] (Zool.) A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed. [ 1913 Webster ]

n. [ Per cent + -age, as in average. See Per, and Cent. ] (Com.) A certain rate per cent; the allowance, duty, rate of interest, discount, or commission, on a hundred. [ 1913 Webster ]

n.; pl. L. Placentæ E. Placentas [ L., a cake, Gr. &unr_; a flat cake, from &unr_; flat, fr. &unr_;, &unr_;, anything flat and broad. ] 1. (Anat.) The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth. [ 1913 Webster ]

☞ In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi on its surface penetrate the blood vessels of the parental uterus, and thus establish a nutritive and excretory connection between the blood of the fetus and that of the parent, though the blood itself does not flow from one to the other. [ 1913 Webster ]

2. (Bot.) The part of a pistil or fruit to which the ovules or seeds are attached. [ 1913 Webster ]

a. 1. Of or pertaining to the placenta; having, or characterized by having, a placenta; as, a placental mammal. [ 1913 Webster ]

2. (Zool.) Of or pertaining to the Placentalia. [ 1913 Webster ]

n. (Zool.) One of the Placentalia. [ 1913 Webster ]

‖n. pl. [ NL. ] (Zool.) A division of Mammalia including those that have a placenta, or all the orders above the marsupials. [ 1913 Webster ]

a. Having reference to the placenta; as, the placentary system of classification. [ 1913 Webster ]

n. 1. (Anat.) The mode of formation of the placenta in different animals; as, the placentation of mammals. [ 1913 Webster ]

2. (Bot.) The mode in which the placenta is arranged or composed; as, axile placentation; parietal placentation. [ 1913 Webster ]