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-- Segment of a sphere, the part of a sphere cut off by a plane, or included between two parallel planes. -- Ventral segment. (Acoustics) See Loor, n., 5.

erve, v. t., 13. Service book, a prayer book or missal. -- Service line (Tennis), a line parallel to the net, and at a distance of 21 feet from it. -- Service of a writ, process, etc. (Law), personal delivery or communication of the writ or process, etc., to the party to be affected by it, so as to subject him to its…

to cause two contiguous parts of a body to slide relatively to each other in a direction parallel to their plane of contact; -- also called shearing stress, and tangential stress.

l. -- Sheer pole (Naut.), an iron rod lashed to the shrouds just above the dead-eyes and parallel to the ratlines. -- Sheer strake (Shipbuilding), the strake under the gunwale on the top side. Totten. -- To break sheer (Naut.), to deviate from sheer, and risk fouling the anchor.

A series of close parallel runnings which are drawn up so as to make the material between them set full by gatherings; -- called also shirring, and gauging.

two points in a conductor, or the terminals of a galvanometer or dynamo, so as to form a parallel or derived circuit through which a portion of the current may pass, for the purpose of regulating the amount passing in the main circuit.

ch connect the piston-rod crosshead with the side levers, in a side-lever engine. (b) See Parallel rod, under Parallel. -- Side screw (Firearms), one of the screws by which the lock is secured to the side of a firearm stock. -- Side table, a table placed either against the wall or aside from the principal table. --…

A temporary fort or parallel where siege guns are mounted.

d gearing, generally resembling bevel gearing, for connecting two shafts that are neither parallel nor intersecting, and in which the teeth slant across the faces of the gears. -- Skew surface (Geom.), a ruled surface such that in general two successive generating straight lines do not intersect; a warped surface; as,…

g on a slate. -- Slate rocks (Min.), rocks which split into thin laminæ, not necessarily parallel to the stratification; foliated rocks. -- Slate spar (Min.), a variety of calcite of silvery white luster and of a slaty structure. -- Transparent slate, a plate of translucent material, as ground glass, upon which a co…

esembling slate; having the nature, appearance, or properties, of slate; composed of thin parallel plates, capable of being separated by splitting; as, a slaty color or texture. Slaty cleavage (Min.), cleavage, as of rocks, into thin leaves or plates, like those of slate; -- applied especially to those cases in which t…

to the length of the spiral, and reduce the whole effect to that of a series of equal and parallel circular currents. When traversed by a current the solenoid exhibits polarity and attraction or repulsion, like a magnet.

al gears, instead of bevel gears, are used to transmit motion between shafts that are not parallel. -- Spiral operculum, an operculum whih has spiral lines of growth. -- Spiral shell, any shell in which the whorls form a spiral or helix. -- Spiral spring. See the Note under Spring, n., 4.

each leg. -- Spur gear (Mach.), a cogwheel having teeth which project radially and stand parallel to the axis; a spur wheel. -- Spur gearing, gearing in which spur gears are used. See under Gearing. -- Spur pepper. (Bot.) See the Note under Capsicum. -- Spur wheel. Same as Spur gear, above.

A parallelogram having four equal sides and four right angles.

Divided into shreds or jags, raised above the plane of the leaf, and not parallel to it; said of a leaf.

cope, by observing the number of the graduations of the rod that are seen between certain parallel wires (stadia wires) in the field of view of the telescope; -- also called stadia, and stadia rod.

The five horizontal and parallel lines on and between which musical notes are written or pointed; the staff. [Obs.] Stave jointer, a machine for dressing the edges of staves.

Characterized by the presence of thin parallel strata, or layers, as in an agate.

order; -- said of a section of an oblique cone having a circular base made by a plane not parallel to the base, but so inclined to the axis that the section is a circle; applied also to two similar triangles when so placed as to have a common angle at the vertex, the opposite sides not being parallel. Brande & C.…