Definition of sphere

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Sphere (n.) The apparent surface of the heavens, which is assumed to be spherical and everywhere equally distant, in which the heavenly bodies appear to have their places, and on which the various astronomical circles, as of right ascension and declination, the equator, ecliptic, etc., are conceived to be drawn; an ideal geometrical sphere, with the astronomical and geographical circles in their proper positions on it..

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Albatross :: Albatross (n.) A web-footed bird, of the genus Diomedea, of which there are several species. They are the largest of sea birds, capable of long-continued flight, and are often seen at great distances from the land. They are found chiefly in the southern hemisphere..
Globe :: Globe (n.) A round or spherical body, solid or hollow; a body whose surface is in every part equidistant from the center; a ball; a sphere..
Meteorological :: Meteorological (a.) Of or pertaining to the atmosphere and its phenomena, or to meteorology..
Vacuum :: Vacuum (n.) The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch..
Morula :: Morula (n.) The sphere or globular mass of cells (blastomeres), formed by the clevage of the ovum or egg in the first stages of its development; -- called also mulberry mass, segmentation sphere, and blastosphere. See Segmentation..
Calefactory :: Calefactory (n.) A hollow sphere of metal, filled with hot water, or a chafing dish, placed on the altar in cold weather for the priest to warm his hands with..
Umbilicus :: Umbilicus (n.) A point of a surface at which the curvatures of the normal sections are all equal to each other. A sphere may be osculatory to the surface in every direction at an umbilicus. Called also umbilic.
Atmospherical :: Atmospherical (a.) Of or pertaining to the atmosphere; of the nature of, or resembling, the atmosphere; as, atmospheric air; the atmospheric envelope of the earth..
Pole :: Pole (n.) Either extremity of an axis of a sphere; especially, one of the extremities of the earth's axis; as, the north pole..
Horoscope :: Horoscope (n.) The planisphere invented by Jean Paduanus.
Aerography :: Aerography (n.) A description of the air or atmosphere; aerology.
Jurisdiction :: "Jurisdiction (a.) Sphere of authority; the limits within which any particular power may be exercised, or within which a government or a court has authority..
Sheep :: Sheep (n. sing. & pl.) Any one of several species of ruminants of the genus Ovis, native of the higher mountains of both hemispheres, but most numerous in Asia..
Projection :: Projection (n.) The representation of something; delineation; plan; especially, the representation of any object on a perspective plane, or such a delineation as would result were the chief points of the object thrown forward upon the plane, each in the direction of a line drawn through it from a given point of sight, or central point; as, the projection of a sphere. The several kinds of projection differ according to the assumed point of sight and plane of projection in each..
Lemming :: Lemming (n.) Any one of several species of small arctic rodents of the genera Myodes and Cuniculus, resembling the meadow mice in form. They are found in both hemispheres..
Astrolabe :: Astrolabe (n.) A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere..
Tranquil :: Tranquil (a.) Quiet; calm; undisturbed; peaceful; not agitated; as, the atmosphere is tranquil; the condition of the country is tranquil..
Anticyclone :: Anticyclone (n.) A movement of the atmosphere opposite in character, as regards direction of the wind and distribution of barometric pressure, to that of a cyclone..
Cygnus :: Cygnus (n.) A constellation of the northern hemisphere east of, or following, Lyra; the Swan..
Hercules :: Hercules (n.) A constellation in the northern hemisphere, near Lyra..
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