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Zeolite :: Zeolite (n.) A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, soda, potash, or rarely baryta. Here are included natrolite, stilbite, analcime, chabazite, thomsonite, heulandite, and others. These species occur of secondary origin in the cavities of amygdaloid, basalt, and lava, also, less frequently, in granite and gneiss. So called because many of these species intumesce before the blowpipe..

Trematodea :: Trematodea (n. pl.) An extensive order of parasitic worms. They are found in the internal cavities of animals belonging to all classes. Many species are found, also, on the gills and skin of fishes. A few species are parasitic on man, and some, of which the fluke is the most important, are injurious parasites of domestic animals. The trematodes usually have a flattened body covered with a chitinous skin, and are furnished with two or more suckers for adhesion. Most of the species are hermaphrodi

Marrow :: Marrow (n.) The tissue which fills the cavities of most bones; the medulla. In the larger cavities it is commonly very fatty, but in the smaller cavities it is much less fatty, and red or reddish in color..

Epithelium :: Epithelium (n.) The superficial layer of cells lining the alimentary canal and all its appendages, all glands and their ducts, blood vessels and lymphatics, serous cavities, etc. It often includes the epidermis (i. e., keratin-producing epithelial cells), and it is sometimes restricted to the alimentary canal, the glands and their appendages, -- the term endothelium being applied to the lining membrane of the blood vessels, lymphatics, and serous cavities..

Faveolate :: Faveolate (a.) Honeycomb; having cavities or cells, somewhat resembling those of a honeycomb; alveolate; favose..

Endothelium :: Endothelium (n.) The thin epithelium lining the blood vessels, lymphatics, and serous cavities. See Epithelium..

Cyst :: Cyst (n.) A pouch or sac without opening, usually membranous and containing morbid matter, which is accidentally developed in one of the natural cavities or in the substance of an organ..

Pleuroperitoneal :: Pleuroperitoneal (a.) Of or pertaining to the pleural and peritoneal membranes or cavities, or to the pleuroperitoneum..

Taeniola :: Taeniola (n.) One of the radial partitions which separate the internal cavities of certain medusae.

Coelenterata :: Coelenterata (n. pl.) A comprehensive group of Invertebrata, mostly marine, comprising the Anthozoa, Hydrozoa, and Ctenophora. The name implies that the stomach and body cavities are one. The group is sometimes enlarged so as to include the sponges..

Fiorite :: Fiorite (n.) A variety of opal occuring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses, having a pearly luster; -- so called from Fiora, in Ischia..

Oestrus :: Oestrus (n.) A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis.

Trisplanchnic :: Trisplanchnic (a.) Of or pertaining to the three great splanchnic cavities, namely, that of the head, the chest, and the abdomen; -- applied to the sympathetic nervous system..

Camarasaurus :: Camarasaurus (n.) A genus of gigantic American Jurassic dinosaurs, having large cavities in the bodies of the dorsal vertebrae..

Calicle :: Calicle (n.) One of the small cuplike cavities, often with elevated borders, covering the surface of most corals. Each is formed by a polyp. (b) One of the cuplike structures inclosing the zooids of certain hydroids. See Campanularian..

Vacuolated :: Vacuolated (a.) Full of vacuoles, or small air cavities; as, vacuolated cells..

Cavernous :: Cavernous (a.) Filled with small cavities or cells.

Infiltration :: Infiltration (n.) The substance which has entered the pores or cavities of a body.

Nautilus :: Nautilus (n.) The only existing genus of tetrabranchiate cephalopods. About four species are found living in the tropical Pacific, but many other species are found fossil. The shell is spiral, symmetrical, and chambered, or divided into several cavities by simple curved partitions, which are traversed and connected together by a continuous and nearly central tube or siphuncle. See Tetrabranchiata..

Lacunous :: Lacunous (a.) Furrowed or pitted; having shallow cavities or lacunae; as, a lacunose leaf..

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