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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

location go
a point or extent in space

line go
a spatial location defined by a real or imaginary unidimensional extent

great circle go
a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center

meridian, line of longitude
an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator

noun.location

3 Subcategories

observer's meridian go
a meridian that passes through the observer's zenith
prime meridian go
meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England)
magnetic meridian go
an imaginary line passing through both magnetic poles of the Earth