1. Of, or relating to biological reproduction. (wiktionary.org)
2. Of, or relating to the genitalia. (wiktionary.org)
1. Of, or relating to psychosexual development during puberty. (wiktionary.org)
Word origin: From Latin genitalis “pertaining to generation or birth” (also a by-name of the goddess Diana), from genitus, past participle of gignere “to beget”.