1. 
[syn: dominance, ascendance, ascendence, ascendancy, ascendency, control]
The Collaborative International Dictionary of English v.0.48:
Ascendancy \As*cend"an*cy\, Ascendance \As*cend"ance\, n.
   Same as Ascendency.
   [1913 Webster]
WordNet (r) 3.0 (2006):
ascendance
    n 1: the state that exists when one person or group has power
         over another; "her apparent dominance of her husband was
         really her attempt to make him pay attention to her" [syn:
         dominance, ascendance, ascendence, ascendancy,
         ascendency, control]