Sib is a technical term in the discipline of anthropology which originally denoted a kinship group among Anglo-Saxon and other Germanic peoples. In an extended sense, it then became the standard term for a variety of other kinds of lineal (matrilineal or patrilineal) or cognatic (i.e.,descended through links of both sexes) kinship groups. The word may also denote a member of such a group.
American anthropologists often used the term 'sib' as the generic term for a category that breaks down into the sub-classifications of patri-sib, referring to patrilineal clan descent, and matri-sib, to refer to matrilineal clan descent.
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- Lessells, C. M.; G. A. Parker (August 1999). "Parent-Offspring Conflict: The Full-Sib-Half-Sib Fallacy". Biological Sciences. The Royal Society. 266 (1429): 1637–1643. doi:10.1098/rspb.1999.0826. PMC 1690187.