descendancy

== English == === Etymology === From descend +‎ -ancy. === Noun === descendancy (countable and uncountable, plural descendancies) (uncountable) The quality or condition of being a descendant. (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.