galactic longitude: Meaning and Definition of

galac'tic lon'gitude

Pronunciation: [key]
— Astron. Astron.
  1. the angular distance in degrees measured eastward in the galactic plane from a radius drawn from the earth as center to the constellation Sagittarius.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
galactic latitude galactic nebula
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