a division of time that is equal to the elapsed time between two consecutive returns of the same terrestrial meridian to the moon.


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  • Lunar-distance

    noun, Navigation. 1. the observed angle between the moon and another celestial body.

  • Lunar-excursion-module

    noun, (often initial capital letter) U.S. Aerospace. 1. . Abbreviation: LEM.

  • Lunar-eclipse

    noun 1. See under (def 1a). [ih-klips] /ɪˈklɪps/ noun 1. Astronomy. 2. any obscuration of light. 3. a reduction or loss of splendor, status, reputation, etc.: Scandal caused the eclipse of his career. verb (used with object), eclipsed, eclipsing. 4. to cause to undergo eclipse: The moon eclipsed the sun. 5. to make less outstanding […]

  • Lunarian

    [loo-nair-ee-uh n] /luˈnɛər i ən/ noun 1. a being supposedly inhabiting the moon. 2. a selenographer. /luːˈnɛərɪən/ noun 1. (archaic) an astronomer concerned with the moon; a selenographer 2. (myth) an inhabitant of the moon

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