Main Entry: syn·chro·nism

Pronunciation: \ˈsiŋ-krə-ˌni-zəm, ˈsin-\

Function: noun

Date: 1588

1 : the quality or state of being synchronous : simultaneousness
2 : chronological arrangement of historical events and personages so as to indicate coincidence or coexistence; also : a table showing such concurrences

— syn·chro·nis·tic \ˌsiŋ-krə-ˈnis-tik, ˌsin-\ adjective