the prime meridian

Definition of the prime meridian

:an imaginary line that runs from the North Pole to the South Pole through Greenwich, England

Word by Word Definitions

prime play
  1. : the second of the canonical hours

  2. : the first hour of the day usually considered either as 6 a.m. or the hour of sunrise

  3. : the earliest stage

  1. : first in time : original

  2. : of, relating to, or being a prime number — compare relatively prime

  3. : having no polynomial factors other than itself and no monomial factors other than 1

  1. : fill, load

  2. : to prepare for firing by supplying with priming

  3. : to insert a primer into (a cartridge case)

meridian play
  1. : the hour of noon : midday

  2. : a great circle of the celestial sphere passing through its poles and the zenith of a given place — see azimuth illustration

  3. : a high point (as of development or prosperity)


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