American Heritage Dictionary
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Century Dictionary
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GNU Webster's 1913
WordNet
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Elsewhere on the web
Or one could imagine that God intervenes and moves the pendula, guaranteeing their synchronicity (the theory of occasionalism).— Gottfried Wilhelm Leibniz
It looks almost as if these tomahawk cruise missiles were launched in perfect synchronicity, a perfect succession to hit and explode at the same time last evening.— CNN Transcript Mar 22, 2003
Synchronicity has been looked up 466 times, favorited 3 times, listed 61 times, and commented on twice.

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