Here are some alternative ways to convey the concept of the prime meridian in Tagalog:
* Meridyanong pangunahin: This is a more formal way to say "prime meridian" and emphasizes its role as the main meridian.
* Linya ng meridyanong pangunahin: This translates to "line of the prime meridian" and clearly defines it as a line.
* Linya ng zero degrees: This emphasizes the prime meridian's location at 0 degrees longitude.
Ultimately, the best way to express "prime meridian" in Tagalog depends on the context and the level of formality required.