prime meridian

noun

: the meridian of 0 degrees longitude which runs through the original site of the Royal Observatory at Greenwich, England, and from which other longitudes are reckoned

Examples of prime meridian in a Sentence

Recent Examples on the Web
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Nations around the world established their own country-specific prime meridians, often running through their capital cities. Emefa Addo Agawu, New York Times, 23 Mar. 2024 Weir was front and center, a human prime meridian, both timeless and untethered from today’s world, a 49er who had discovered the secrets of the cosmos inside Terrapin Station. Jeff Weiss, Spin, 21 Aug. 2023 Longitude measure distances from the prime meridian. Caroline Picard, Good Housekeeping, 31 Aug. 2018

Word History

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of prime meridian was in 1884

Dictionary Entries Near prime meridian

Cite this Entry

“Prime meridian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prime%20meridian. Accessed 22 Dec. 2024.

Kids Definition

prime meridian

noun
: the meridian of 0° longitude from which other longitudes are calculated

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