mis ‧ ce ‧ ge ‧ na ‧ tion /ˌmɪsədʒəˈneɪʃ ə n, ˌmɪsɪdʒəˈneɪʃ ə n $ -sedʒ-/ BrE AmE noun [uncountable]
[ Date: 1800-1900 ; Language: Latin ; Origin: miscere 'to mix' + genus 'race' ]
formal when people of different races have a sexual relationship or have children together