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Argo :: Argo (n.) A large constellation in the southern hemisphere, called also Argo Navis. In modern astronomy it is replaced by its three divisions, Carina, Puppis, and Vela..

Quadrant :: Quadrant (n.) An instrument for measuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90¡, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction..

Astronomy :: Astronomy (n.) The science which treats of the celestial bodies, of their magnitudes, motions, distances, periods of revolution, eclipses, constitution, physical condition, and of the causes of their various phenomena..

Navigation :: Navigation (n.) the science or art of conducting ships or vessels from one place to another, including, more especially, the method of determining a ship's position, course, distance passed over, etc., on the surface of the globe, by the principles of geometry and astronomy..

Urania :: Urania (n.) One of the nine Muses, daughter of Zeus by Mnemosyne, and patron of astronomy..

Gunter''s Scale :: Gunter's scale () A scale invented by the Rev. Edmund Gunter (1581-1626), a professor of astronomy at Gresham College, London, who invented also Gunter's chain, and Gunter's quadrant..

Spherograph :: Spherograph (n.) An instrument for facilitating the practical use of spherics in navigation and astronomy, being constructed of two cardboards containing various circles, and turning upon each other in such a manner that any possible spherical triangle may be readily found, and the measures of the parts read off by inspection..

Tychonic :: Tychonic (a.) Of or pertaining to Tycho Brahe, or his system of astronomy..

Reduce :: Reduce (n.) To bring into a certain order, arrangement, classification, etc.; to bring under rules or within certain limits of descriptions and terms adapted to use in computation; as, to reduce animals or vegetables to a class or classes; to reduce a series of observations in astronomy; to reduce language to rules..

Starred :: Star-read (n.) Doctrine or knowledge of the stars; star lore; astrology; astronomy.

Astronomical :: Astronomical (a.) Of or pertaining to astronomy; in accordance with the methods or principles of astronomy.

Astronomy :: Astronomy (n.) A treatise on, or text-book of, the science..

Sphere :: Sphere (n.) In ancient astronomy, one of the concentric and eccentric revolving spherical transparent shells in which the stars, sun, planets, and moon were supposed to be set, and by which they were carried, in such a manner as to produce their apparent motions..

Cometology :: Cometology (n.) The department of astronomy relating to comets.

Sidereal :: Sidereal (a.) Relating to the stars; starry; astral; as, sidereal astronomy..

Gastronomy :: Gastronomy (n.) The art or science of good eating; epicurism; the art of good cheer.

Astronomer :: Astronomer (n.) One who is versed in astronomy; one who has a knowledge of the laws of the heavenly orbs, or the principles by which their motions are regulated, with their various phenomena..

Astronomy :: Astronomy (n.) Astrology.

Science :: Science (n.) Any branch or department of systematized knowledge considered as a distinct field of investigation or object of study; as, the science of astronomy, of chemistry, or of mind..

Spheric :: Spheric (a.) Of or pertaining to the heavenly orbs, or to the sphere or spheres in which, according to ancient astronomy and astrology, they were set..

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