ANTRUM

(Lat.). n. n, A?n(asn)trufm(trutm). Gr., ävrpov. Fr., antre. Ger., Héhle. It.,Sp., antro. 1. In anatomy, a cavity, especially one within a bone; also a dilatation, an ampulla. [C. 2. In botany, the variety of fruit called pomuin in the restricte sense, or pomum capsulatum (the ordinary apple being an example). [Mônch (B, 198).]—A. auris. See TyuPANUM.—A. buecinosum [Bartholin]. Fr.,antre buccineux. Sp.,antro buccinoso, See CocHLEA.—A. dentale. See Pulp cavity. ethmoid ale. Fr., antre ethmoïdal. See Ethmoidal sINUsEs. — A. gene, A. Highmori, A. highmorianum, A. bhighmorianum magnum. Fr,, antre d’ High more. Ger., High more’sche Hoéhle. See woriliory a—A. mastoideum. See Mastoid a—A. maxilla, A. maxillæ superior is, A. max ill are, A. of High more. See Maxillary a.—A. of Malacarne. The posterior perforated space of Tarinus in the brain, [A, 314.|—A. of the mastoid praee . See Mastoid a.—A. olfact i vum. Fr., antre olfact if, See Ethmoid a i sixvses.—A. pylori, A, pylori cum, A. pyloric am Will is i i, Fr., antre du Ger., Pfôrtnerhôhle. The pyloric portion of the stomac! „ 66.]—A. sphenoid ale, A. sphenoidalium. See Sphenoidal siNUs. [L, 115.—A. tubæ. Réderer's term for a sac-like dilatation of the oviduct, at a point about an inch from the fimbriated extremity, supposed by some authors to be characteristic of pregnancy. [A, 96.|—Cardiac a. Luschka’s term for an abnormal dilatation sometimes presented by the œsophagus just above its pa age through the diaphragm. [A, 314.]—Duodenal a. The normal dilatation of the duodenum near its origin. [A,314.|—Mastoid a. Lat., a. mastoideum. Fr., antre mastoidien, Ger., Warzenfortsatzhôhle, Zitzen fortsatzhähle. It., Sp., antro mastoideo. The cavity of the horizontal portion of the mastoid proce of the temporal bone; a large empty space (but sometimes containing connective-ti ue membranes and bands) situated below the roof of the proce , connected with the tympanum by an opening in the posterior wall of the latter. [C; F.] —Maxillary a. Lat., a. max ill are, Fr., antre de Vos mazillaire supérieur. Ger., Oberkieferhôhle, Kinnbackenhéhle, gro e Schleimhähle des Oberkiefers. It., antro mas cell are. Sp., antro maxilar. Syn,: maxillary sinus, a. af High more. A large, regularly pyramidal cavity of the body of the superior maa an with its base ebrregnondinr to the nasal surface of the bone, its sides corresponding to the facial, zygomatic, and orbital surfaces, and its apex extending into the malar proce . It is lined with mucous membrane, and communicates with the middle meatus of the nose. [L, 142.]