genealogy UK /ˌdʒiːniˈælədʒi/US /ˌd͡ʒiniˈɑlədʒi/ noun3 •The descent of a person, family, or group from an ancestor or ancestors; lineage or pedigree. •The study, and formal recording of such descents.“Investigators are currently looking into additional investigative genetic genealogy options for DNA evidence to check for matches,” the Pima County Sheriff’s Department said Tuesday. — 2026 •A record or table of such descent; a family tree. formsgenealogies