Definition of "Ascendant" :

noun: someone from whom you are descended (but usually more remote than a grandparent)

noun: position or state of being dominant or in control

"That idea was in the ascendant."

adjective: most powerful or important or influential

"The economically ascendant class."

adjective: tending or directed upward

"Rooted and ascendant strength like that of foliage."