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The act of severing, or the state of being severed; partition; separation. Milman.

The tube which runs through the partitions of chambered cephalopod shells.

. . . must be the principle. Locke. Sound boarding, boards for holding pugging, placed in partitions of under floors in order to deaden sounds. -- Sound bow, in a series of transverse sections of a bell, that segment against which the clapper strikes, being the part which is most efficacious in producing the sound. Se…

A partition or door to direct or prevent a current of air.

An upright scanting, esp. one of the small uprights in the framing for lath and plaster partitions, and furring, and upon which the laths are nailed.

Tissue in which the cell or partition walls are wholly wanting and the cell bodies fused together, so that the tissue consists of a continuous mass of protoplasm in which nuclei are imbedded, as in ordinary striped muscle.

One of the radial partitions which separate the internal cavities of certain medusæ.

To cut through, as a partition between one working and another.

e in," "The day we celebrate," etc. Toast rack, a small rack or stand for a table, having partitions for holding slices of dry toast.

an ellipse or hyperbola) (Geom.), that axis which passes through the foci. -- Transverse partition (Bot.), a partition, as of a pericarp, at right angles with the valves, as in the siliques of mustard.

A bend, sag, or partitioned chamber, in a drain, soil pipe, sewer, etc., arranged so that the liquid contents form a seal which prevents passage of air or gas, but permits the flow of liquids.

A drum-shaped wheel with spirally curved partitions by which water is raised to the axis when the wheel revolves with the lower part of the circumference submerged, -- used for raising water, as for irrigation.

Having but one septum, or partition; -- said of two-celled fruits, such as the silicles of cruciferous plants.

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.

, etc.; -- called also air bath. A modified form is provided with a jacket in the outside partition for holding water, or other volatile liquid, by which the temperature may be limited exactly to the required degree. -- Vapor burner, a burner for burning a vaporized hydrocarbon. -- Vapor density (Chem.), the relative…

Curtain or covering; -- applied to various membranous partitions, especially to the soft palate. See under Palate.

erposed large cylindrical or prismatic cells (tracheæ), which have lost their intervening partitions, and are usually marked with dots, pits, rings, or spirals by internal deposition of secondary membranes; a duct. Acoustic vessels. See under Acoustic. -- Weaker vessel, a woman; -- now applied humorously. "Giving hono…

of a pair of bones, beneath the ethmoid region of the skull, forming a part a part of the partition between the nostrils in man and other mammals.

A partition between flues in a chimney.

A partition in a water wheel, by which the form of the buckets is determined. Wrest pin (Piano Manuf.), one of the pins around which the ends of the wires are wound in a piano. Knight. -- Wrest plank (Piano Manuf.), the part in which the wrest pins are inserted.