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...

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

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..

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

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..

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

Venus :: Venus (n.) The metal copper; -- probably so designated from the ancient use of the metal in making mirrors, a mirror being still the astronomical symbol of the planet Venus..

Armil :: Armil (n.) An ancient astronomical instrument.

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..

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..

Ptolemaist :: Ptolemaist (n.) One who accepts the astronomical system of Ptolemy.

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..

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

Instrument :: Instrument (n.) That by means of which any work is performed, or result is effected; a tool; a utensil; an implement; as, the instruments of a mechanic; astronomical instruments..

Astronomic :: Astronomic (a.) Astronomical.

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..

Year :: Year (n.) The time of the apparent revolution of the sun trough the ecliptic; the period occupied by the earth in making its revolution around the sun, called the astronomical year; also, a period more or less nearly agreeing with this, adopted by various nations as a measure of time, and called the civil year; as, the common lunar year of 354 days, still in use among the Mohammedans; the year of 360 days, etc. In common usage, the year consists of 365 days, and every fourth year (called bissext

Astroscope :: Astroscope (n.) An old astronomical instrument, formed of two cones, on whose surface the constellations were delineated..

Observer :: Observer (n.) One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer..

Regulator :: Regulator (n.) A clock, or other timepiece, used as a standard of correct time. See Astronomical clock (a), under Clock..

Libration Point :: Libration point (n.) any one of five points in the plane of a system of two large astronomical bodies orbiting each other, as the Earth-moon system, where the gravitational pull of the two bodies on an object are approximately equal, and in opposite directions. A solid object moving in the same velocity and direction as such a libration point will remain in gravitational equilibrium with the two bodies of the system and not fall toward either body..

Random Fonts

Most Popular