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Ossicle :: Ossicle (n.) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes..

Phlebolith :: Phlebolith (n.) A small calcareous concretion formed in a vein; a vein stone.

Concretion :: Concretion (n.) A rounded mass or nodule produced by an aggregation of the material around a center; as, the calcareous concretions common in beds of clay..

Micaceo-calcareous :: Micaceo-calcareous (a.) Partaking of the nature of, or consisting of, mica and lime; -- applied to a mica schist containing carbonate of lime..

Cockup :: Cockup (n.) A large, highly esteemed, edible fish of India (Lates calcarifer); -- also called begti..

Hepar :: Hepar (n.) Any substance resembling hepar proper, in appearance; specifically, in homeopathy, calcium sulphide, called also hepar sulphuris calcareum (/)..

Otolite :: Otolite (n.) One of the small bones or particles of calcareous or other hard substance in the internal ear of vertebrates, and in the auditory organs of many invertebrates; an ear stone. Collectively, the otoliths are called ear sand and otoconite..

Bicalcarate :: Bicalcarate (a.) Having two spurs, as the wing or leg of a bird..

Calcariferous :: Calcariferous (a.) Lime-yielding; calciferou.

Calcarine :: Calcarine (a.) Pertaining to, or situated near, the calcar of the brain..

Echinoidea :: Echinoidea (n. pl.) The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid..

Lates :: Lates (n.) A genus of large percoid fishes, of which one species (Lates Niloticus) inhabits the Nile, and another (L. calcarifer) is found in the Ganges and other Indian rivers. They are valued as food fishes..

Sclerenchyma :: Sclerenchyma (n.) The hard calcareous deposit in the tissues of Anthozoa, constituting the stony corals..

Spirillum :: Spirifer (n.) Any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side..

Retepore :: Retepore (n.) Any one of several species of bryozoans of the genus Retepora. They form delicate calcareous corals, usually composed of thin fenestrated fronds..

Style :: Stylaster (n.) Any one of numerous species of delicate, usually pink, calcareous hydroid corals of the genus Stylaster..

Portland Stone :: Portland stone () A yellowish-white calcareous freestone from the Isle of Portland in England, much used in building..

Foraminifera :: Foraminifera (n. pl.) An extensive order of rhizopods which generally have a chambered calcareous shell formed by several united zooids. Many of them have perforated walls, whence the name. Some species are covered with sand. See Rhizophoda..

Syconium :: Sycones (n. pl.) A division of calcareous sponges.

Calcar :: Calcar (n.) A hollow tube or spur at the base of a petal or corolla.

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