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Relating to or involving the conjunction of stars, planets, or other celestial objects.‘The next Northern Maximum declinational tide July 2nd will be in phase with the inductive effects of the synodic conjunction of Jupiter peaking on July 9th.’‘The synodic conjunction of Earth with Jupiter was on the 9th of July 2008, centered in the July 6th through 12th hurricane window in my forecast above.’
Mid 17th century via late Latin from Greek sunodikos, from sunodos (see synod).
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