longitude has definitions from the field of geography
[ noun ] (geography) an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator


"all points on the same meridian have the same longitude"

Used in print

(L. Don Leet and Florence J. Leet, editors, The World of...)

Within about an hour with the help of reports from seismic stations in Alaska , Arizona and California , the quake 's epicenter was placed at 51 degrees North latitude and 158 degrees East longitude .