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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Inglobate :: Inglobate (a.) In the form of a globe or sphere; -- applied to nebulous matter collected into a sphere by the force of gravitation.

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.

Earthquake :: Earthquake (n.) A shaking, trembling, or concussion of the earth, due to subterranean causes, often accompanied by a rumbling noise. The wave of shock sometimes traverses half a hemisphere, destroying cities and many thousand lives; -- called also earthdin, earthquave, and earthshock..

Meridian :: Meridian (a.) A great circle of the sphere passing through the poles of the heavens and the zenith of a given place. It is crossed by the sun at midday.

Nosocomial :: Nosocomial (a.) Of or pertaining to a hospital; as, nosocomial atmosphere..

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..

Way :: Way (n.) Sphere or scope of observation.

Oxygen :: Oxygen (n.) A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96..

Ethereal :: Ethereal (a.) Pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; as, ethereal space; ethereal regions..

Oogonium :: Oogonium (n.) A special cell in certain cryptogamous plants containing oospheres, as in the rockweeds (Fucus), and the orders Vaucherieae and Peronosporeae..

Atmosphere :: Atmosphere (n.) The pressure or weight of the air at the sea level, on a unit of surface, or about 14.7 Ibs. to the sq. inch..

Hyperborean :: Hyperborean (a.) Northern; belonging to, or inhabiting, a region in very far north; most northern; hence, very cold; fright, as, a hyperborean coast or atmosphere..

Command :: Command (v. t.) To have within a sphere of control, influence, access, or vision; to dominate by position; to guard; to overlook..

Looming :: Looming (n.) The indistinct and magnified appearance of objects seen in particular states of the atmosphere. See Mirage.

Aeroscopy :: Aeroscopy (n.) The observation of the state and variations of the atmosphere.

Dasymeter :: Dasymeter (n.) An instrument for testing the density of gases, consisting of a thin glass globe, which is weighed in the gas or gases, and then in an atmosphere of known density..

Aerography :: Aerography (n.) A description of the air or atmosphere; aerology.

Buoyancy :: Buoyancy (n.) The property of floating on the surface of a liquid, or in a fluid, as in the atmosphere; specific lightness, which is inversely as the weight compared with that of an equal volume of water..

Lift :: Lift (n.) The sky; the atmosphere; the firmament.