1. position or state of being dominant or in control;

"that idea was in the ascendant"

2. someone from whom you are descended (but usually more remote than a grandparent)

1. tending or directed upward;

"rooted and ascendant strength like that of foliage"- John Ruskin

2. most powerful or important or influential;

"the economically ascendant class"

"D-day is considered the dominating event of the war in Europe"