IPA: /ˌɒn.kəˈlɒdʒ.ɪ.kəl/
KK: /ɑnˈkɑlədʒɪkəl/
Relating to the branch of medicine that deals with the diagnosis and treatment of cancer.
The oncological team developed a new treatment plan for the patient.
Oncological → It is formed from "onkos" (from Greek, meaning mass or tumor) and "-logical" (from Greek "logia", meaning study or science). The word "oncological" refers to the study or science of tumors or cancer.
Think of 'onkos' meaning a 'mass' or 'tumor' and '-logical' meaning 'study' — that's why oncological relates to the study of tumors.