dom·i·na·trix \ˌdämə̇ˈnā.triks\noun (pluraldominatri·ces \-ˈnātrəˌsēz, -nəˈtrīˌsēz\) Etymology: Latin, feminine of dominator — more at dominator : a woman who physically and psychologically dominates and abuses her partner in sadomasochistic sex ; broadly : a dominating woman