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used chiefly for ornament; an ornamental knob; a boss. A belt of straw and ivy buds, With coral clasps and amber studs. Marlowe. Crystal and myrrhine cups, embossed with gems And studs of pearl. Milton.

Any one of numerous species of delicate, usually pink, calcareous hydroid corals of the genus Stylaster.

erous calcareous processes which extend between, and unite, the adjacent septa of certain corals, especially of the fungian corals.

One of the transverse plants found in the calicles of certain corals and hydroids. Tabula rasa ( Etym: [L.], a smoothed tablet; hence, figuratively, the mind in its earliest state, before receiving impressions from without; -- a term used by Hobbes, Locke, and others, in maintaining a theory opposed to the doctrine of…

An artificial group of stony corals including those which have transverse septa in the calicles. The genera Pocillopora and Favosites are examples.

Any large blackish seaweed, especially the Laminaria saccharina. See Kelp. Coral and sea fan and tangle, the blooms and the palms of the ocean. C. Kingsley.

The more or less cuplike calicle of a coral.

nge. "I shall fight tooth and nail for international copyright." Charles Reade. -- Tooth coralline (Zoöl.), any sertularian hydroid. -- Tooth edge, the sensation excited in the teeth by grating sounds, and by the touch of certain substances, as keen acids. -- Tooth key, an instrument used to extract teeth by a motio…

emble teeth, as certain plants of the genus Lathræa, and various species of Dentaria. See Coralwort.

A genus of very large marine bivalve shells found on the coral reefs of the Indian and Pacific Oceans. One species (T. gigas) often weighs four or five hundred pounds, and is sometimes used for baptismal fonts. Called also paw shell, and fountain shell.

e bore. See Capillary. -- Fire tube (Steam Boilers), a tube which forms a flue. -- Tube coral. (Zoöl.) Same as Tubipore. -- Tube foot (Zoöl.), one of the ambulacral suckers of an echinoderm. -- Tube plate, or Tube sheet (Steam Boilers), a flue plate. See under Flue. -- Tube pouch (Mil.), a pouch containing priming…

A genus of halcyonoids in which the skeleton, or coral (called organ-pipe coral), consists of a mass of parallel cylindrical tubes united at intervals by transverse plates. These corals are usually red or purple and form large masses. They are natives of the tropical parts of the Indian and Pacific Oceans.…

Any fossil coral of the genus Syringopora consisting of a cluster of upright tubes united together by small transverse tubules.

Having but one front surface; as, some foliaceous corals are unifacial, the polyp mouths being confined to one surface.

s or vesiclelike structures; covered with vesicles or bladders; vesiculate; as, vesicular coral; vesicular lava; a vesicular leaf.

der Alcyonaria belonging to Virgularia and allied genera of the family Virgularidæ. These corals are allied to the sea-pens, but have a long rodlike rhachis inclosing a slender, round or square, calcareous axis. The polyps are arranged in transverse rows or clusters along each side of the rhachis.

An extinct genus of cyathophylloid corals common in the Paleozoic formations. It is cup-shaped with numerous septa, and with a deep pit in one side of the cup.

brate animals which more or less resemble plants in appearance, or mode of growth, as the corals, gorgonians, sea anemones, hydroids, bryozoans, sponges, etc., especially any of those that form compound colonies having a branched or treelike form, as many corals and hydroids.