[ge.ne.al.o.gy] n, pl -gies [ME genealogie, fr. MF, fr. LL genealogia, fr. Gk, fr. genea race, family + -logia -logy; akin to Gk genos race] (14c) 1: an account of the descent of a person, family, or group from an ancestor or from older forms
2: regular descent of a person, family, or group of organisms from a progenitor or older form: pedigree
3: the study of family pedigrees -- ge.ne.a.log.i.cal adj -- ge.ne.a.log.i.cal.ly adv