The Collaborative International Dictionary of English v.0.48:

Ecliptic \E*clip"tic\, a. [L. eclipticus belonging to an
   eclipse, Gr. 'ekleiptiko`s. See Eclipse.]
   1. Pertaining to the ecliptic; as, the ecliptic way.
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   2. Pertaining to an eclipse or to eclipses.
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   Lunar ecliptic limit (Astron.), the space of 12[deg] on the
      moon's orbit from the node, within which, if the moon
      happens to be at full, it will be eclipsed.

   Solar ecliptic limit, the space of 17[deg] from the lunar
      node, within which, if a conjunction of the sun and moon
      occur, the sun will be eclipsed.
      [1913 Webster]