neurobiologyPronunciation: /ˌnjʊərəʊbʌɪˈɒlədʒi/Definition of neurobiology noun [mass noun] the biology of the nervous system. Derivatives neurobiologicalPronunciation: /-bʌɪəˈlɒdʒɪk(ə)l/ adjective neurobiologist noun neurobiology in other Oxford dictionaries Definition of neurobiology in the US English dictionary