noun
or as·cend·en·cy -dənsē, -si
( -es )
: the quality or state of being in the ascendant : controlling influence : governing power : domination
dominant castes seek to retain their ascendancy — Bertrand Russell
the growing ascendancy of brains and skills over capital power — Bud Wilson
would not patiently submit to the ascendancy of France — T.B.Macaulay