The quality of being sexual; that which is characterized or distinguished by sex.
"The film explores human sexuality through its intimate portrayal of desire and relationships."
In plain English: Sexuality is everything about who you are attracted to and how you express your romantic feelings toward others.
"She realized that her sexuality was an important part of who she is."
Usage: Sexuality refers to an individual's enduring patterns of emotional, romantic, and/or sexual attractions rather than just biological characteristics. Use this term when discussing personal identity or orientation instead of the more general word "sex.
The word sexuality was borrowed directly from New Latin and entered English with its current meaning related to sexual characteristics or behavior. Unlike many other loanwords that shifted over time, this term retained the same definition it held when first adopted into modern usage.