((exclusive)) — Meridian Longitude

. Longitude is the angular measurement used to determine a location's distance east or west of a starting point known as the Prime Meridian Brainly.in Core Concepts and Features

Furthermore, meridian lines are used in astronomy. Telescopes are mounted on "meridian circles" to track celestial objects precisely as they cross the local meridian of the observatory. This is called a "transit," and it is how star catalogs are measured. meridian longitude

🔴 Redundant / Non‑standard – not grammatically wrong, but imprecise and unnecessary. Prefer “longitude” or “line of longitude.” meridian longitude

For centuries, different nations used their own "starting" meridians (often based in Paris, Lisbon, or Rio de Janeiro). This made international navigation a nightmare. meridian longitude