The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
prime meridian
1 ENTRIES FOUND:
prime meridian
(noun)
prime meridian
noun
prime meridian
noun
Britannica Dictionary definition of PRIME MERIDIAN
the prime meridian
:
an imaginary line that runs from the North Pole to the South Pole through Greenwich, England
ASK THE EDITOR
What is the adjective form of
tourist
?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
plummet
:
to fall or drop suddenly in amount, value, etc.
Learn More »