auric2 (arik)

[ IMG:content-1412.png:[graphic] granular ma es. When reduced it yields a gold-colored alloy of copper and zinc. Buratite is a variety which was supposed to be singular in containing calcium. aurichalcum (a-ri-kal'kum), n. See orichalc. auricle (a'ri-kl), n. [L. auricula, the external ear, the ear, dim. of auris = E. earl, q. v.] 1. The pinna of the external ear; that part of the organ of hearing which projects from the side of the head. See pinna, and cut under ear. Also auricula. 2. A chamber or one of the chambers of the heart into which the blood comes from the veins, and from which it pa es into the ventricle or one of the ventricles. In the mammalian, avian, and reptilian heart there are two auricles, the right and the left. The name is sometimes used in a more special sense to designate an ear-like portion or appendage (appendix auriculæ) of each of these chambers; the remainder is then distinguished as the sinus. The right auricle receives venous blood from the venæ cavæ; the left auricle receives arterial blood from the lungs through the pulmonary veins. See cuts under heart and lung. 3. Something, or some part of a thing, like or likened to an ear: variously applied, chiefly in botany, zoölogy, and comparative anatomy. Specifically-(a) In entom., an appendage of the planta of certain insects, as bees. (6) In echinoderms, an auricula. See auricula, 4. (c) In bot., an ear-shaped or ear-like appendage; the inflated lower lobe or appendage of the leaves of some Hepatica. 4. An instrument applied to the ears to a ist in hearing; a kind of ear-trumpet. auricled (a'ri-kld), a. [ a uri comous (a-rik'ō-mus), a. [L. auricomus, with golden hair, auricula (a-rik'ū-la), n.; pl. auricula (-lē). [ the external ear, the ear: see auricle.] 1. In bot., a garden flower derived from the yellow Primula Auricula, found native in the Swi Alps, and sometimes called bear's-ear from the shape of its leaves. It has been cultivated for centuries by florists, who have succeeded in raising from seed a great number of beautiful varieties. 2. Same as auricle, 1.-3. [ cap.] [NL.] In zoöl., a genus of phytophagous or plant-eating pulmonate gastropods, typical of the family Auriculidæ. A. judæ and A. midæ are examples. They are known as ear - shells.-4. [NL.] In echinoderms, one of the perforated proce es into which the ambulacral and sometimes the interambulacral plates are produced, and which arch over the interior of the ambulacra, as in the typical echini, or sea-urchins. See cut under Ech i no idea .