bioturbation Syllabification: (bi·o·tur·ba·tion)Pronunciation: /ˌbīōtərˈbāSHən/Definition of bioturbation noun Geology the disturbance of sedimentary deposits by living organisms. Derivatives bioturbatedPronunciation: /-ˈtərbātid/ adjective bioturbation in other Oxford dictionaries Definition of bioturbation in the British & World English dictionary