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Definition of Oncology
1. Noun. The branch of medicine concerned with the study and treatment of tumors. 
Definition of Oncology
1. the science of tumors [n -GIES]
Medical Definition of Oncology
1. 
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1. Noun. The branch of medicine concerned with the study and treatment of tumors. 
1. the science of tumors [n -GIES]
1.