'ascendant' definitions:

Definition of 'ascendant'

From: WordNet
adjective
Tending or directed upward; "rooted and ascendant strength like that of foliage"- John Ruskin [syn: ascendant, ascendent, ascensive]
adjective
Most powerful or important or influential; "the economically ascendant class"; "D-day is considered the dominating event of the war in Europe" [syn: ascendant, ascendent, dominating]
noun
Position or state of being dominant or in control; "that idea was in the ascendant" [syn: ascendant, ascendent]
noun
Someone from whom you are descended (but usually more remote than a grandparent) [syn: ancestor, ascendant, ascendent, antecedent, root] [ant: descendant, descendent]

Synonyms of 'ascendant'

From: Moby Thesaurus