Definition of sexual adjective from the Oxford Advanced Learner's Dictionary

        

    sexual

     adjective
    adjective
    BrE BrE//ˈsekʃuəl//
     
    ; NAmE NAmE//ˈsekʃuəl//
     
     
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  1. 1  [usually before noun] connected with the physical activity of sex sexual behaviour They were not having a sexual relationship at the time. Her interest in him is purely sexual. sexual orientation (= whether you are heterosexual or homosexual) a sexual partner (= a person who you have sex with)
  2. 2[only before noun] connected with the process of producing young the sexual organs (= the penis, vagina, etc.) sexual reproduction
  3. 3[usually before noun] connected with the state of being male or female sexual characteristics
  4. Word Origin mid 17th cent.: from late Latin sexualis, from Latin sexus ‘sex’.
See the Oxford Advanced American Dictionary entry: sexual