>>1183599You must have been reading something different, or ignoring some of the words. Here, from a medical dictionary.
Gender
the behavioral, cultural, or psychological traits typically associated with one sex
Typically associated with one sex. Gender is not defined by male or female, but behavioral and psychological association.
American heritage medical dictionary
gen·der (jndr)
n.
1. The sex of an individual, male or female, based on reproductive anatomy.
2. Sexual identity, especially in relation to society or culture.
Please note the second definition.
McGraw-Hill Concise Dictionary of Modern Medicine
One's personal, social, and legal status as ? or ?, based on body and behavior, not on genital and/or erotic criteria.
"NOT ON GENITAL CRITERIA."
Clear enough?