kəʊˈɪnsɪdəns koʊˈɪnsɪdəns kənˈdʒʌŋkʃən ˈhæpənˌstæns ˈhap(ə)nˌstans the temporal property of two things happening at the same time the interval determining the coincidence gate is adjustable the quality of occupying the same position or area in space he waited for the coincidence of the target and the cross hairs an event that might have been arranged although it was really accidental