*meridian* a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles; in astronomy, a circle passing through the celestial poles and the zenith of a given place on the earth's surface.Recorded from late Middle English, the word comes via Old Fr What are synonyms for prime meridian? Gg; GMT, Greenwich Mean Time • Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich; now, it is for the most part, There are 10 multiple choice questions which cover the equator, prime meridian, latitude, & longitude and can be used as a quiz, test, or additional practice. The placement of the prime meridian is a purely pol The Equator is at 0° latitude. Definition of meridian written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, and count/noncount noun labels. Search the meaning and definition of over one hundred thousand words! It is also commonly known as the Greenwich Meridian and is a component that forms the International Date Line, which then divides the Western and Eastern Hemispheres of the Earth. This great circle divides the … Greenwich meridian, imaginary line used to indicate 0° longitude that passes through Greenwich, a borough of London, and terminates at the North and South poles. See the fact file below for more information on the prime meridian: The Prime Meridian divides the Earth into East/West from the North Pole to the South Pole with an imaginary line along the longitude line of 0°. A prime meridian is the meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Find out more with Bitesize KS2 Geography. The Martian Prime Meridian -- Longitude 'Zero' On Earth, the longitude of the Royal Observatory in Greenwich, England is defined as the "prime meridian," or the zero point of longitude. Dictionary ! Time zones are divided by imaginary lines called meridians which run from the North Pole to the South Pole. The meridian (line of longitude) passing through Royal Greenwich Observatory, Greenwich, England is called the prime meridian (longitude = 0 degrees).. The prime meridian is arbitrary, meaning it could be chosen to be anywhere.Any line of longitude (a meridian) can serve as the 0 longitude line. Definition of prime meridian written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, and count/noncount noun labels. To help locate where a place is in the world, people use imaginary lines called latitude and longitude. Prime meridian (English to Korean translation). The home of the Prime Meridian, the central line used to measure distance across the world, since 1714, in 1884, Sir George Biddell Airy built the “Transit Circle” telescope that defined the exact location of the meridian. The true prime meridian of the world, as agreed by every nation on the planet in 1984, is the IERS Reference Meridian, which is also known as the International Reference Meridian or IRM. An international conference held in Washington, D.C., in 1884 designated “the meridian passing through the centre of the transit The Prime Meridian separates the Eastern and Western Hemispheres. The Prime Meridian is an imaginary line that, similar to the equator, divides the earth into eastern and western hemispheres. Any line of longitude (a meridian) can serve as the 0 longitude line. Locations on Earth are measured in degrees east or west from this position. The Equator and Prime Meridian. Ptolemy was free, however, to lay his prime meridian, the zero-degree longitude line, wherever he liked. 2. The meridian was agreed upon in October 1884.At the behest of the President of the United States of America, 41 delegates from 25 nations met in Washington, DC, USA for the International Meridian Conference. : And it's where time itself starts, being the site of the prime meridian, Greenwich Mean Time or degrees longitude, depending on what you prefer. The prime meridian is arbitrary, meaning it could be chosen to be anywhere. UTC time changes 1 hour forward and backward corresponding to a 1-hour difference in mean solar time for every 15 degrees east or west of the prime meridian (0° longitude) in Greenwich, London, United Kingdom. The crosshairs of the eyepiece sit exactly at 0-degrees longitude and defines the Prime Meridian for the world. Prime Meridian Definition for Kids. Prime meridian definition, the meridian running through Greenwich, England, from which longitude east and west is reckoned. The Equator separates the Northern and Southern Hemispheres. On the earliest charts displaying a longitude scale, the prime meridian passed through the Canaries. It is the longitudinal meridian of reference. The offset is expressed as either UTC- or UTC+ and the number of hours and minutes. Together, a prime meridian and its antimeridian (the 180th meridian in a 360°-system) form a great circle. The prime meridian is a line of geographical longitude that is defined at 0°. If you are planning to study Geography, there are a number of facts and definitions you are going to want to familiarize yourself with. The prime meridian of longitude is in Greenwich, South London. It is generally known as zero degrees longitude or vertical line of reference in […] See more. However, there is an international agreement that the meridian that runs through Greenwich, England, is considered the official prime meridian. The prime meridian is a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. Absolute Location vs Relative Location: Absolute Location: describes the exact position of a point, often using latitude and longitude “Kenya’s latitude and longitude is 1° 00′ N and 38° 00′ E; that is 1° north of the equator, and 38° east of the prime meridian.”. Interactive Time Zone Map Antonyms for prime meridian. This is a worksheet I created to assess my students' understanding of map skills. Relative Location: finds the location of a place using other surrounding places, or by using cardinal directions 2 words related to prime meridian: line of longitude, meridian. Meridian (geography) synonyms, Meridian (geography) pronunciation, Meridian (geography) translation, English dictionary definition of Meridian (geography). 13 sentence examples: 1. There is an imaginary line running through the UK called the Prime Meridian. It is sometimes referred to as the Greenwich Meridian. The lines of longitude and latitude are used to identify locations on the globe. 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