Definition of oncology noun from the Oxford Advanced American Dictionary

 

oncology

 noun
noun
NAmE//ɑŋˈkɑlədʒi//
 
[uncountable]
 
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the scientific study of and treatment of tumors in the body
NAmE//ɑŋˈkɑlədʒɪst//
 
noun
See the Oxford Advanced Learner's Dictionary entry: oncology