greenwich
Definition
Proper noun: 1. A borough in southeast London, England: A historic district within Greater London, located on the south bank of the River Thames. 2. The location of the Prime Meridian: The site of the Royal Observatory, Greenwich, where the internationally agreed Prime Meridian (0° longitude) is defined. 3. The reference point for global timekeeping: The basis for Greenwich Mean Time (GMT) and Coordinated Universal Time (UTC), the world's standard for measuring time zones.
Usage Examples
- Proper noun:
- We took a boat trip down the Thames to Greenwich.
- The Prime Meridian at Greenwich divides the Eastern and Western Hemispheres.
- All time zones are measured relative to Greenwich.
Advanced Usage
- "Greenwich Mean Time (GMT)": The mean solar time at the Royal Observatory in Greenwich, used historically and still commonly as a time standard.
- The conference call is scheduled for 1400 Greenwich Mean Time.
- "Greenwich Meridian": Another term for the Prime Meridian (0° longitude) that passes through Greenwich.
- The ship's captain calculated their position east of the Greenwich Meridian.
Variants and Related Words
- Greenwich Mean Time (GMT) (n): The time at the Prime Meridian, a global time standard.
- Prime Meridian (n): The meridian at 0° longitude, passing through Greenwich.
Synonyms
- Prime Meridian (when referring specifically to the 0° longitude line).
Noun
-
a borough of Greater London on the Thames; zero degrees of longitude runs through Greenwich; time is measured relative to Greenwich Mean Time
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