Kahdensukuisena

Kahdensukuisena is a term found in Finnish-language genealogical writing and speculative linguistics. It designates a person or lineage that is in the second generation, meaning two generations removed from a specified ancestor or from a focal progenitor within a family tree. The construction comes from kahden, the genitive of kaksi (two), together with suku, meaning lineage or clan, plus the -nen suffix to form an adjective, and the essive -na to express "as." In practical use, kahdensukuisena appears in descriptive passages or on genealogical diagrams to indicate second-generation status within a line of descent, as when distinguishing between the first generation of settlers and their children who form the second generation.

Some writers may also use kahdensukuisena to describe relationships that are two generations apart, such as grandchildren relative to their grandparents, although terminology varies by context. Note that there is no universally codified definition for kahdensukuisena, and some writers may prefer alternative terms such as toinen sukupolvi or kahden sukupolven jälkeläinen for similar concepts. The term is most common in contemporary Finnish genealogical literature and in digital family-tree projects.