heterosexualnoun [ C ]
uk/ˌhet.ər.əˈsek.ʃu.əl/us/ˌhet̬.ə.roʊˈsek.ʃu.əl/informal heteroa person who is sexually attracted to people of the opposite sex
Compare
bisexual noun
homosexual
heterosexual
adjective uk/ˌhet.ər.əˈsek.ʃu.əl/us/ˌhet̬.ə.roʊˈsek.ʃu.əl/
heterosexual sex/relationships
heterosexuality
noun [ U ] uk/ˌhet.ər.əˌsek.ʃuˈæl.ə.ti/us/ˌhet̬.ə.roʊˌsek.ʃuˈæl.ə.t̬i/
heterosexually
adverb uk/ˌhet.ər.əˈsek.ʃu.ə.li/us/ˌhet̬.ə.roʊˈsek.ʃu.ə.li/
I don't think he's heterosexually inclined.