(Noun) An enduring emotional, romantic, sexual or affectional attraction or non-attraction to other people. People use a variety of labels to describe their sexual orientation. Some of the better-known labels or categories include bisexual, pansexual, asexual, lesbian, gay or straight. Gender identity and sexual orientation are not the same. Transgender and gender non-conforming people may identify with any sexual orientation, and their sexual orientation may or may not change before, during or after gender transition.