SDfamilie

SDfamilie is a term used in some German-language sources to denote a “family” or group defined by two initial traits represented by the letters S and D. There is no universally accepted definition, and its meaning varies by discipline and author.

Because it is a label rather than a fixed category, members of an SDfamilie are determined by context-specific criteria. Naming often follows local conventions, and the set of members may change as new examples are identified or definitions are revised.

Scholarly usage of the term spans several fields, including linguistics, biology, information science, and cultural studies, where SDfamilie is used to describe related items sharing a core feature or lineage associated with S and D. In each context, what S and D stand for can differ, and the criteria for inclusion are defined by the relevant researchers or communities of practice.

Because SDfamilie is informal, references are scattered and there is no centralized taxonomy. Researchers must consult the original material to understand what S and D stand for in a given case and which items are considered part of the SDfamilie.

See also: taxonomy, classification, grouping, and other disambiguation resources.