Example Sentences
"The Prime Meridian was established in Greenwich, England, in 1884."
"All other lines of longitude are measured east or west of the Prime Meridian."
Synonyms & Related Terms
Quick Check
Which best describes the meaning of prime meridian?
Study Tips
To remember prime meridian, try writing it in a sentence of your own. Connect it to something you already know about geography.
Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.