Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of astronomical is as below...

Sector :: Sector (n.) An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector..

Ephemeris :: Ephemeris (n.) A publication giving the computed places of the heavenly bodies for each day of the year, with other numerical data, for the use of the astronomer and navigator; an astronomical almanac; as, the American Ephemeris and Nautical Almanac..

Astrophysical :: Astrophysical (a.) Pertaining to the physics of astronomical science.

Flexure :: Flexure (n.) The small distortion of an astronomical instrument caused by the weight of its parts; the amount to be added or substracted from the observed readings of the instrument to correct them for this distortion.

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

Terrestrial :: Terrestrial (a.) Adapted for the observation of objects on land and on the earth; as, a terrestrial telescope, in distinction from an astronomical telescope..

Gastronomical :: Gastronomical (a.) Pertaining to gastromony.

Uranic :: Uranic (a.) Of or pertaining to the heavens; celestial; astronomical.

Rudolphine :: Rudolphine (a.) Pertaining to, or designating, a set of astronomical tables computed by Kepler, and founded on the observations of Tycho Brahe; -- so named from Rudolph II., emperor of Germany..

Almanac :: Almanac (n.) A book or table, containing a calendar of days, and months, to which astronomical data and various statistics are often added, such as the times of the rising and setting of the sun and moon, eclipses, hours of full tide, stated festivals of churches, terms of courts, etc..

Reckoning :: Reckoning (n.) The calculation of a ship's position, either from astronomical observations, or from the record of the courses steered and distances sailed as shown by compass and log, -- in the latter case called dead reckoning (see under Dead); -- also used for dead reckoning in contradistinction to observation..

Chronometer :: Chronometer (n.) A portable timekeeper, with a heavy compensation balance, and usually beating half seconds; -- intended to keep time with great accuracy for use an astronomical observations, in determining longitude, etc..

Almagest :: Almagest (n.) The celebrated work of Ptolemy of Alexandria, which contains nearly all that is known of the astronomical observations and theories of the ancients. The name was extended to other similar works..

Prutenic :: Prutenic (a.) Prussian; -- applied to certain astronomical tables published in the sixteenth century, founded on the principles of Copernicus, a Prussian..

Ecliptic :: Ecliptic (a.) A great circle drawn on a terrestrial globe, making an angle of 23¡ 28' with the equator; -- used for illustrating and solving astronomical problems..

Plane :: Plane (a.) An ideal surface, conceived as coinciding with, or containing, some designated astronomical line, circle, or other curve; as, the plane of an orbit; the plane of the ecliptic, or of the equator..

Table :: Table (n.) Any collection and arrangement in a condensed form of many particulars or values, for ready reference, as of weights, measures, currency, specific gravities, etc.; also, a series of numbers following some law, and expressing particular values corresponding to certain other numbers on which they depend, and by means of which they are taken out for use in computations; as, tables of logarithms, sines, tangents, squares, cubes, etc.; annuity tables; interest tables; astronomical tables,

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..

Astronomic :: Astronomic (a.) Astronomical.

Analemma :: Analemma (n.) An instrument of wood or brass, on which this projection of the sphere is made, having a movable horizon or cursor; -- formerly much used in solving some common astronomical problems..

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