Attending to its etymology, Sexology –this comes from the Latin SEXUS which means SEX and the Greek LOGOS which means TREATY/STUDY– is defined as Treaty or Study of Sex (Gender).

Product of all the experience acquired during the last 38 years, we have conceptualized Sexology as the branch of knowledge which studies GENDER and SEXUAL FUNCTION.

The dictionaries point out that Sexology is the Treaty/Study of GENDER. The word “GENDER” is defined the existence of an “anatomic structure” which allows distinguishing between male and female is indicated. “Structure” due to the distribution and order of the parts in a whole, and “anatomic” because All the “anatomic structures” have a function; understood as their own activity.

Activities pertaining to GENDER are defined with the word “SEXUAL”. Then the construct “Sexual Function” express “GENDERʼs own activity”. Remember the activity is the faculty of auctioning, working: conjoint of works and operations.

Then the concept that GENDER is an structure which has a function proposed by Bianco and Montiel during the meetings of the Teaching Staff and Post-Graduate students of Medical Sexology held in February 1988, corresponds with the definition of Sexology.

Sexology is the Treaty or Study of GENDER. GENDER is and structure which has a function. Then, the OPERATIVE DEFINITION OF SEXOLOGY is: Treaty/Study of GENDER and ITS FUNCTION.

The OPERATIVE CONCEPT OF SEXOLOGY will be presented and discussed.