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Trumpet :: Trumpet (n.) A wind instrument of great antiquity, much used in war and military exercises, and of great value in the orchestra. In consists of a long metallic tube, curved (once or twice) into a convenient shape, and ending in a bell. Its scale in the lower octaves is limited to the first natural harmonics; but there are modern trumpets capable, by means of valves or pistons, of producing every tone within their compass, although at the expense of the true ringing quality of tone..

Pulsometer :: Pulsometer (n.) A device, with valves, for raising water by steam, partly by atmospheric pressure, and partly by the direct action of the steam on the water, without the intervention of a piston; -- also called vacuum pump..

Quinquevalve :: Quinquevalve (a.) Alt. of Quinquevalvula.

Lithophagous :: Lithophagous (a.) Eating or destroying stone; -- applied to various animals which make burrows in stone, as many bivalve mollusks, certain sponges, annelids, and sea urchins. See Lithodomus..

Acephala :: Acephala (n. pl.) That division of the Mollusca which includes the bivalve shells, like the clams and oysters; -- so called because they have no evident head. Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. See Mollusca..

Lyopomata :: Lyopomata (n. pl.) An order of brachiopods, in which the valves of shell are not articulated by a hinge. It includes the Lingula, Discina, and allied forms..

Tricuspid :: Tricuspid (a.) Of or pertaining to the tricuspid valves; as, tricuspid obstruction..

Teredo :: Teredo (n.) A genus of long, slender, wormlike bivalve mollusks which bore into submerged wood, such as the piles of wharves, bottoms of ships, etc.; -- called also shipworm. See Shipworm. See Illust. in App..

Anomia :: Anomia (n.) A genus of bivalve shells, allied to the oyster, so called from their unequal valves, of which the lower is perforated for attachment..

Valvate :: Valvate (a.) Opening as if by doors or valves, as most kinds of capsules and some anthers..

Asiphonida :: Asiphonida (n. pl.) A group of bivalve mollusks destitute of siphons, as the oyster; the asiphonate mollusks..

Gearing :: Gearing (n.) The parts by which motion imparted to one portion of an engine or machine is transmitted to another, considered collectively; as, the valve gearing of locomotive engine; belt gearing; esp., a train of wheels for transmitting and varying motion in machinery..

Gyration :: Gyration (n.) One of the whorls of a spiral univalve shell.

Valve :: Valve (n.) One of the pieces or divisions of bivalve or multivalve shells.

Ostrea :: Ostrea (n.) A genus of bivalve Mollusca which includes the true oysters.

Intracolic :: Intracolic (a.) Within the colon; as, the intracolic valve..

Mussel :: Mussel (n.) Any one of many species of marine bivalve shells of the genus Mytilus, and related genera, of the family Mytidae. The common mussel (Mytilus edulis; see Illust. under Byssus), and the larger, or horse, mussel (Modiola modiolus), inhabiting the shores both of Europe and America, are edible. The former is extensively used as food in Europe..

Lead :: Lead (n.) The width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke..

Valve :: Valve (n.) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves..

Lag :: Lag (n.) The amount of retardation of anything, as of a valve in a steam engine, in opening or closing..

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