* Longitude refers to the angular distance, measured in degrees, east or west of the prime meridian. Lines of longitude run vertically around the globe, from the North Pole to the South Pole.
Here are some other words related to the concept:
* Meridional: This word refers to something related to or situated in the direction of a meridian.
* Vertical: While not specific to the globe, this word simply means upright or perpendicular to the horizon.