IPA: /ˌhɛtərəʊsɛkʃuˈælɪti/
KK: /hɛtəroʊsɛkʃuˈælɪti/
A sexual orientation where a person is attracted to individuals of the opposite sex.
Many people identify their sexual orientation as heterosexuality.
Heterosexuality → It is formed from "hetero-" (from Greek "heteros", meaning different or other) and "sexuality" (from Latin "sexualis", meaning of or pertaining to sex). The term describes a sexual orientation characterized by attraction to individuals of the opposite sex.
Think of 'hetero-' meaning 'different' or 'other' and 'sexuality' relating to sex — this helps you remember that heterosexuality refers to attraction to the opposite sex.