PHRATRY By N., Pam M.S. - April 7, 2013 noun. a social unit with typical kinship bonds, commonly containing many clans ascertaining unilateral descent. PHRATRY: "The term phratry is that which more modern terms like fraternity are derived." Related Psychology Terms DESCENT GROUP BILINEAL DESCENT BILINEAL DE KINSHIP NETWORK CONFLUENCE MODEL SOCIUS PEDIGREE OTOHEMINEURASTHENIA UNILATERAL DESCENT ENDOGAMY Cite this page: N., Pam M.S., "PHRATRY," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/phratry/ (accessed June 4, 2020).