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lunar cycle
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English Dictionary: lunar cycle by the DICT Development Group
1 result for lunar cycle
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Lunar \Lu"nar\, a. [L. lunaris, fr. luna the moon. See {Luna},
      and cf. {Lunary}.]
      1. Of or pertaining to the moon; as, lunar observations.
  
      2. Resembling the moon; orbed. --Dryden.
  
      3. Measured by the revolutions of the moon; as, a lunar
            month.
  
      4. Influenced by the moon, as in growth, character, or
            properties; as, lunar herbs. --Bacon.
  
      {Lunar caustic} (Med. Chem.), silver nitrate prepared to be
            used as a cautery; -- so named because silver was called
            luna by the ancient alchemists.
  
      {Lunar cycle}. Same as {Metonic cycle}. See under {Cycle}.
  
      {Lunar distance}, the angular distance of the moon from the
            sun, a star, or a planet, employed for determining
            longitude by the {lunar method}.
  
      {Lunar method}, the method of finding a ship's longitude by
            comparing the local time of taking (by means of a sextant
            or circle) a given lunar distance, with the Greenwich time
            corresponding to the same distance as ascertained from a
            nautical almanac, the difference of these times being the
            longitude.
  
      {Lunar month}. See {Month}.
  
      {Lunar observation}, an observation of a lunar distance by
            means of a sextant or circle, with the altitudes of the
            bodies, and the time, for the purpose of computing the
            longitude.
  
      {Lunar tables}.
            (a) (Astron.) Tables of the moon's motions, arranged for
                  computing the moon's true place at any time past or
                  future.
            (b) (Navigation) Tables for correcting an observed lunar
                  distance on account of refraction and parallax.
  
      {Lunar year}, the period of twelve lunar months, or 354 days,
            8 hours, 48 minutes, and 34.38 seconds.
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