line_of_longitude (HyperDic hyper-dictionary)

English > 1 sense of the expression *line of longitude*:
NOUN	location	line of longitude, meridian	an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator

English > *line of longitude*: 1 sense > noun 1, location
Meaning	An imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator.
Synonym	meridian
Instances	dateline, date line, International Date Line	An imaginary line on the surface of the earth following (approximately) the 180th meridian
Narrower	magnetic meridian	An imaginary line passing through both magnetic poles of the Earth
	observer's meridian	A meridian that passes through the observer's zenith
	prime meridian	meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England)
Broader	great circle	A circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
Spanish	meridiano
Catalan	meridià

HyperDic: line_of_longitude