meridian
noun(me-rid-i-an)
a great circle on the surface of the earth passing through the poles
meridian
noun(me-rid-i-an)
the half of such a circle included between the poles
meridian
noun(me-rid-i-an)
a representation of such a circle or half circle numbered for longitude on a map or globe
meridian
geographical name(me-rid-i-an)
city in southwestern Idaho west of Boise population 75,092
meridian
geographical name(me-rid-i-an)
city in east central Mississippi population 41,148
meridian
noun(me-rid-i-an)
the meridian of 0 degrees longitude which runs through the original site of the Royal Observatory at Greenwich, England, and from which other longitudes are reckoned
meridian
noun(me-rid-i-an)
an imaginary line that runs from the North Pole to the South Pole through Greenwich, England