Source : Webster's Revised Unabridged Dictionary (1913)

Geocyclic \Ge`o*cyc"lic\, a. [Gr. ge`a, gh^, the earth + ky`klos
   circle .]
   1. Of, pertaining to, or illustrating, the revolutions of the
      earth; as, a geocyclic machine.

   2. Circling the earth periodically.