Definition of palaeontology noun from the Oxford Advanced Learner's Dictionary

 

palaeontology

 noun
(especially British English)(usually North American English paleo-)noun
BrE BrE//ˌpæliɒnˈtɒlədʒi//
 
, BrE//ˌpeɪliɒnˈtɒlədʒi//
 
; NAmE NAmE//ˌpeɪliɑːnˈtɑːlədʒi//
 
[uncountable]
 
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the study of fossils (= the remains of animals or plants in rocks) as a guide to the history of life on earth Word Origin mid 19th cent.: from palaeo- + Greek onta ‘beings’ (neuter plural of ōn, present participle of einai ‘be’) + -logy.