Definition of meridian

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Meridian (a.) A great circle on the surface of the earth, passing through the poles and any given place; also, the half of such a circle included between the poles..

Lern More About Meridian

Transit :: Transit (n.) The passage of a heavenly body over the meridian of a place, or through the field of a telescope..
Antoecians :: Antoecians (n. pl) Those who live under the same meridian, but on opposite parallels of latitude, north and south of the equator..
Magnetic :: Magnetic (n.) Any metal, as iron, nickel, cobalt, etc., which may receive, by any means, the properties of the loadstone, and which then, when suspended, fixes itself in the direction of a magnetic meridian..
Meridionality :: Meridionality (n.) The state of being in the meridian.
Noon :: Noon (n.) The middle of the day; midday; the time when the sun is in the meridian; twelve o'clock in the daytime.
Range :: Range (v.) In the public land system of the United States, a row or line of townships lying between two successive meridian lines six miles apart..
Astrolabe :: Astrolabe (n.) A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere..
Culminate :: Culminate (v. i.) To reach its highest point of altitude; to come to the meridian; to be vertical or directly overhead.
Dipleidoscope :: Dipleidoscope (n.) An instrument for determining the time of apparent noon. It consists of two mirrors and a plane glass disposed in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's center is on the meridian..
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.
Appulse :: Appulse (n.) The near approach of one heavenly body to another, or to the meridian; a coming into conjunction; as, the appulse of the moon to a star, or of a star to the meridian..
Azimuth :: Azimuth (n.) An arc of the horizon intercepted between the meridian of the place and a vertical circle passing through the center of any object; as, the azimuth of a star; the azimuth or bearing of a line surveying..
Perioecians :: Perioecians (n. pl.) Those who live on the same parallel of latitude but on opposite meridians, so that it is noon in one place when it is midnight in the other. Compare Antoeci..
Antemeridian :: Antemeridian (a.) Being before noon; in or pertaining to the forenoon. (Abbrev. a. m..
Westing :: Westing (n.) The distance, reckoned toward the west, between the two meridians passing through the extremities of a course, or portion of a ship's path; the departure of a course which lies to the west of north..
North :: North (n.) That one of the four cardinal points of the compass, at any place, which lies in the direction of the true meridian, and to the left hand of a person facing the east; the direction opposite to the south..
Postmeridian :: Postmeridian (a.) Coming after the sun has passed the meridian; being in, or belonging to, the afternoon. (Abbrev. P. M.).
Latitude :: Latitude (n.) Distance north or south of the equator, measured on a meridian..
Metre :: Metre (n.) A measure of length, equal to 39.37 English inches, the standard of linear measure in the metric system of weights and measures. It was intended to be, and is very nearly, the ten millionth part of the distance from the equator to the north pole, as ascertained by actual measurement of an arc of a meridian. See Metric system, under Metric..
Declination :: Declination (n.) The arc of the horizon, contained between the vertical plane and the prime vertical circle, if reckoned from the east or west, or between the meridian and the plane, reckoned from the north or south..
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