synchronous
Cross references: 1. contemporary syn.chro.nous \'sin-kr*-n*s 'sin-\ aj [LL synchronos, fr. Gk, fr. syn- + chronos time] 1: happening, existing, or arising at the same time 2: recurring or operating at exactly the same periods 3: involving or indicating synchronism 4: having the same period; also : having the same period and phase - syn.chro.nous.ly av