What is another word for zero meridian?
Pronunciation: [zˈi͡əɹə͡ʊ mɛɹˈɪdi͡ən] (IPA) 
The term "zero meridian" is often used to describe the prime meridian, the line of longitude at which the planet is divided into Eastern and Western hemispheres. However, there are several synonyms that can be used to refer to this important line. One common alternative is simply "the prime meridian," which is the line that passes through the Royal Observatory in Greenwich, England. Other synonyms include "the Greenwich meridian," "the international meridian," and "the longitude zero line." Regardless of the specific term used, this line is critical for navigation and timekeeping, and has played an important role in shaping our understanding of the planet's geography.
