synchronism
syn.chro.nism \'sin-kr*-.niz-*m, 'sin-\ \.sin-kr*-'nis-tik, .sin-\ n 1: the quality or state of being synchronous : SIMULTANEOUSNESS 2: chronological arrangement of historical events and personages so as to i ndicate coincidence or coexistence; also : a table showing such concurrences - syn.chro.nis.tic aj