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its sides generates a cone; the revolution of a semicircle about the diameter generates a sphere.

as to alter a ship's latitude or its longitude, but not both. Ham. Nav. Encyc. -- Right sphere (Astron. & Geol.), a sphere in such a position that the equator cuts the horizon at right angles; in spherical projections, that position of the sphere in which the primitive plane coincides with the plane of the equator.…

The middle latitudes of the southern hemisphere. So called from the boisterous and prevailing westerly winds, which are especially strong in the South Indian Ocean up to 50º S.

al. This high rotative velocity of the sun must cause an equatorial rise of the solar atmosphere. Siemens. Rotative engine, a steam engine in which the reciprocating motion of the piston is transformed into a continuous rotary motion, as by means of a connecting rod, a working beam and crank, or an oscillating cylinder…

especially, one like the arc of a circle or an ellipse, or a portion of the surface of a sphere; rotund; bulging; protuberant; not angular or pointed; as, a round arch; round hills. "Their round haunches gored." Shak.

Domain; province; sphere. Sir W. Scott.

pening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, to prevent collapse.

o nut and a few other North American plants, and many peculiar plants of the southern hemisphere.

The domain or sphere of scoundrels; scoundrels, collectively; the state, ideas, or practices of scoundrels. Carlyle.

tor. Dip sector, an instrument used for measuring the dip of the horizon. -- Sector of a sphere, or Spherical sector, the solid generated by the revolution of the sector of a circle about one of its radii, or, more rarely, about any straight line drawn in the plane of the sector through its vertex.

egment of a line, the part of a line contained between two points on it. -- 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.

arrangement of the cells in segmentation or cleavage of the ovum; the cavity of the blastosphere. In the gastrula stage, the segmentation cavity in which the mesoblast is formed lies between the entoblast and ectoblast. See Illust. of Invagination. -- Segmentation nucleus (Biol.), the body formed by fusion of the male…

ameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius.

s the apse of a church, a niche, or the like. It is approximately the quarter of a hollow sphere.

Having the shape of a half orb or sphere.

Having the figure of a half sphere. Kirwan.

everal species of ruminants of the genus Ovis, native of the higher mountains of both hemispheres, but most numerous in Asia.

which become visible by coming with planetary velocity into the upper regions of the atmosphere. At certain periods, as on the 13th of November and 10th of August, they appear for a few hours in great numbers, apparently diverging from some point in the heavens, such displays being known as meteoric showers, or star s…

The office, or sphere of jurisdiction, of a sheriff; sheriffalty. It was ordained by 28 Edward I that the people shall have election of sheriff in every shire where the shrievalty is not of inheritance. Blackstone.

a thing considered apart from, and yet in relation to, the rest; as, the upper side of a sphere; also, any part or position viewed as opposite to or contrasted with another; as, this or that side. Looking round on every side beheld A pathless desert. Milton.