Longitude

noun · History and geography

Definition

The angle of a place east or west of the prime meridian, in degrees.

Explanation

Lines of longitude, called meridians, run between the poles.

Example

74 degrees W is west of Greenwich.

Common confusion

Lines of longitude are not parallel; they meet at the poles.

Related terms

Study guides that use this term

Entry status: written by the editorial team and awaiting independent review. Spot an error? Use our corrections page.

← All vocabulary