English definition of Sphere

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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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Hemispheroidal :: Hemispheroidal (a.) Resembling, or approximating to, a hemisphere in form..

Hemispherical :: Hemispherical (a.) Containing, or pertaining to, a hemisphere; as, a hemispheric figure or form; a hemispherical body..

Atmospherical :: Atmospherical (a.) Caused, or operated on, by the atmosphere; as, an atmospheric effect; an atmospheric engine..

Hygrometry :: Hygrometry (n.) That branch of physics which relates to the determination of the humidity of bodies, particularly of the atmosphere, with the theory and use of the instruments constructed for this purpose..

Twilight :: Twilight (n.) The light perceived before the rising, and after the setting, of the sun, or when the sun is less than 18? below the horizon, occasioned by the illumination of the earth's atmosphere by the direct rays of the sun and their reflection on the earth..

Tranquil :: Tranquil (a.) Quiet; calm; undisturbed; peaceful; not agitated; as, the atmosphere is tranquil; the condition of the country is tranquil..

Crater :: Crater (n.) A constellation of the southen hemisphere; -- called also the Cup.

Shrievalty :: Shrievalty (n.) The office, or sphere of jurisdiction, of a sheriff; sheriffalty..

Ecliptic :: Ecliptic (a.) A great circle of the celestial sphere, making an angle with the equinoctial of about 23¡ 28'. It is the apparent path of the sun, or the real path of the earth as seen from the sun..

Sphericle :: Sphericle (n.) A small sphere.

Santalaceous :: Santalaceous (a.) Of or pertaining to a natural order of plants (Santalaceae), of which the genus Santalum is the type, and which includes the buffalo nut and a few other North American plants, and many peculiar plants of the southern hemisphere..

Disorb :: Disorb (v. t.) To throw out of the proper orbit; to unsphere.

Orbicle :: Orbicle (n.) A small orb, or sphere..

Analemma :: Analemma (n.) An orthographic projection of the sphere on the plane of the meridian, the eye being supposed at an infinite distance, and in the east or west point of the horizon..

Refraction :: Refraction (n.) The change in the direction of a ray of light, and, consequently, in the apparent position of a heavenly body from which it emanates, arising from its passage through the earth's atmosphere; -- hence distinguished as atmospheric refraction, or astronomical refraction..

Station :: Station (n.) Post assigned; office; the part or department of public duty which a person is appointed to perform; sphere of duty or occupation; employment.

Hydrometeor :: Hydrometeor (n.) A meteor or atmospheric phenomenon dependent upon the vapor of water; -- in the pl., a general term for the whole aqueous phenomena of the atmosphere, as rain, snow, hail, etc..

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..

Volatile :: Volatile (a.) Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly..

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..