0 a medical operation, or series of operations, that gives a transgender person the physical characteristics of the gender (= sex) that they feel they belong to :
In 1946, Gillies carried out the first female-to-male sex reassignment surgery.
The male chromosomes do not change with either hormonal treatment or sex reassignment surgery
She has not yet decided whether to undergo sex reassignment surgery.
Sex reassignment surgery is a major operation and the cultural shift from presenting as male to presenting as female is a major change of lifestyle.
Sex reassignment surgery consists of processes transsexual women and men take in order to match their anatomical sex to their gender identity.