Definitions

1. noun

A borough in southeastern London, England, famous for its maritime history, particularly the location of the Prime Meridian, and as the setting for the Royal Observatory.

“The tourist visited the Royal Observatory at Greenwich to learn about the history of navigation and timekeeping.”

2. proper noun

The University of Greenwich, a university located in the Greenwich area of London.

“She graduated from the University of Greenwich with a degree in environmental science.”

3. proper noun

Greenwich Mean Time (GMT), the time zone based on the mean solar time at the Royal Observatory.

“The company operates on Greenwich Mean Time to ensure global coordination.”