descendancy

English

From descend +‎ -ancy.

descendancy (countable and uncountable, plural descendancies)

(uncountable) The quality or condition of being a descendant.
- 1993, Stephen J. Binz, The God of Freedom and Life: A Commentary on the Book of Exodus‎^[1]:
  The principal concern of the priestly writers was to legitimate the role of Aaron by demonstrating his descendancy from the priestly lineage of Levi.
(countable) Descendants considered collectively.
- 1989, Ontario Genealogical Society, Families, Volumes 28-29
  His sections in the book include Types of Genealogical Projects (pedigrees, lineages, descendancies, relationships).
(uncountable) The opposite of ascendancy; the condition of being in the process of losing power or control.