palaeontologyPronunciation: /ˌpalɪɒnˈtɒlədʒi, ˌpeɪ-/ (US paleontology)Translate palaeontology | into Italian Definition of palaeontology noun [mass noun] the branch of science concerned with fossil animals and plants. Derivatives palaeontologicalPronunciation: /-təˈlɒdʒɪkəl/ adjective palaeontologist noun Origin: mid 19th century: from palaeo- + Greek onta 'beings' (neuter plural of ōn, present participle of einai 'be') + -logypalaeontology in other Oxford dictionaries Definition of palaeontology in the US English dictionary