1. a doctor who specializes in the diagnosis and treatment of cancer
Usage: medical

Examples

• The oncologist explained the treatment options for her breast cancer.
• After the diagnosis, she was referred to an oncologist at the cancer center.
• The oncologist recommended chemotherapy followed by radiation therapy.
• He decided to become an oncologist after his father died of cancer.
• The oncologist reviewed the test results with the patient’s family.
• She consulted with three different oncologists before choosing her treatment plan.