NOUN
- meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England)
How To Use prime meridian In A Sentence
- The placement of the prime meridian is a purely political decision.
- Paris was not the site of the world's first prime meridian.
- That's the instant the sun is aligned with the degree line of longitude, or the prime meridian - also called the Greenwich Meridian.
- By agreement, the longitude passing through Greenwich of Observatory is called the prime meridian.
- Ptolemy was free, however, to lay his prime meridian, the zero-degree longitude line, wherever he liked.
