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Of or pertaining to longitude or length; as, longitudinal distance.

In the direction of length.

Having to opposite curvatures, that is, curved longitudinally in one direction and transversely in the opposite direction, as the surface of a saddle.

The stem; the central part, or longitudinal support, on which organs or parts are arranged; the central line of any body. Gray.

Having two principal ribs running longitudinally, as a leaf.

Two-nerved; -- applied to leaves which have two longitudinal ribs or nerves.

ge of the upper slate. -- Bond timber, timber worked into a wall to tie or strengthen it longitudinally.

A longitudinal ridge or projection like the keel of a boat.

A yellowish beetle (Doryphora decemlineata), with ten longitudinal, black, dorsal stripes. It has migrated eastwards from its original habitat in Colorado, and is very destructive to the potato plant; -- called also potato beetle and potato bug. See Potato beetle.

A pericarp, opening longitudinally on one side and having the seeds loose in it; a follicle; a double follicle or pair of follicles.

A transmission arrangement in which the longitudinal crank shaft drives the rear wheels through a clutch, change-speed gear, countershaft, and two parallel side chains, in order.

One of the riblike longitudinal ridges on the exterior of many corals.

Having ribs, or the appearance of ribs; (Bot.) having one or more longitudinal ribs.

A class of Coelenterata, commonly ellipsoidal in shape, swimming by means of eight longitudinal rows of paddles. The separate paddles somewhat resemble combs.

tation of a parallelogram round one its sides; or a body of rollerlike form, of which the longitudinal section is oblong, and the cross section is circular.

ed horizontally at one end and loaded at the other. (b) (Mech.) The figure assumed by the longitudinal axis of an originally straight bar under any system of bending forces. Rankine. -- Elastic fluids, those which have the property of expanding in all directions on the removal of external pressure, as the air, steam,…

A longitudinal strip projecting as a fin from an object, to strengthen it, or to enter a channel in another object and thereby prevent displacement sidwise but permit motion lengthwise; a spline.

t been folded. -- Flat rail, a railroad rail consisting of a simple flat bar spiked to a longitudinal sleeper. -- Flat rods (Mining), horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. Raymond. -- Flat rope, a rope made by plaiting instead of twisting; gasket; sennit.…

-- Floor light, a frame with glass panes in a floor. -- Floor plan. (a) (Shipbuilding) A longitudinal section, showing a ship as divided at the water line. (b) (Arch.) A horizontal section, showing the thickness of the walls and partitions, arrangement of passages, apartments, and openings at the level of any floor of…

Esp., two longitudinal bands of white nervous tissue beneath the lateral ventricles of the brain.