Astronautics Vocabulary

The Astronautics Vocabulary is a glossary of terms that pertain to the science and technology of spaceflight. This alphabetical list can be navigated by clicking on the letters A-Z displayed on this page.

Definition of meridian

Translation:
méridien
Definition:
The great circle on the celestial sphere passing through the poles and the zenith.
Other Definition:
A line of longitude on the Earth or another astronomical body.
Synonym:
None
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