English Reference
noun

longitude

n.
US /ˈɫɑndʒəˌtud/ UK /lˈɒndʒɪtjˌuːd/ lon·gi·tude UK spelling longitude's, longitude's

  1. 01 B2 Upper Intermediate Technical Science

    the distance east or west of the prime meridian, measured in degrees.

    the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object.

    Simple

    The captain checked the ship's longitude to see how far they had traveled across the ocean.

    In context

    Determining precise longitude at sea remained a significant challenge for navigators until the invention of the marine chronometer in the eighteenth century.

    Usage

    Usually paired with latitude to provide a specific location.

  2. 02 B2 Upper Intermediate Technical Science

    an imaginary line on a map that goes from the top of the Earth to the bottom.

    any of the imaginary great circles passing through the North and South Poles, perpendicular to the equator.

    Simple

    Lines of longitude are closer together near the poles than they are at the equator.

    In context

    The cartographer drew the lines of longitude at fifteen-degree intervals to represent the different time zones across the globe.

  3. 03 C2 Proficiency Archaic

    an old word for the length of something.

    the linear extent or length of an object along its greatest dimension.

    Simple

    The old scrolls described the longitude of the temple walls in ancient units.

    In context

    In the seventeenth-century manuscript, the architect specified the longitude of the gallery as being twice its breadth.


From Middle English, borrowed from Old French longitude, from Latin longitūdō (“length, a measured length”), from longus (“long”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin longitūdō
Level B2 · Upper Intermediate
Frequency Frequent
Updated