Origin: Latin suffix -ude
Longitude has 2 different meanings across 1 category:
the angular distance between a point on any meridian and the prime meridian at Greenwich
"Navigators use longitude to calculate their east-west position based on the angular distance from the prime meridian at Greenwich."
Angular distance measured west or east of the prime meridian.
"The city's longitude is 74 degrees west, placing it far to the left on a standard world map relative to Greenwich."
In plain English: Longitude is an imaginary line that runs north to south on Earth's surface, used along with latitude to pinpoint exact locations around the globe.
"Mariners used longitude to determine their exact east-west position at sea."
Usage: Longitude measures how far east or west a location is from the Prime Meridian, distinguishing it from latitude which tracks north-south position. This coordinate works in conjunction with time zones since each 15 degrees of longitude roughly corresponds to one hour difference.
Longitude comes from the Latin word longitudo, meaning "a measured length," which entered English through Old French. The term originally referred to physical length before being applied specifically to geographic measurement.