Which abbreviation refers to the treatment method known as chemotherapy?

The abbreviation that refers to the treatment method known as chemotherapy is "chemo." This term is widely recognized and used in both medical settings and everyday conversations to describe the use of chemical substances to treat diseases, particularly cancer. Chemotherapy works by targeting and killing rapidly dividing cells, which is a hallmark of cancerous cells.

While "cyt" can relate to cytotoxic agents that are often used in chemotherapy, it is more of a prefix related to cells and does not specifically denote the treatment itself. "dx" is an abbreviation for diagnosis, which refers to identifying a disease rather than a treatment method. "XRT" stands for radiation therapy, another form of cancer treatment, but distinct from chemotherapy. Thus, "chemo" is the most accurate and straightforward abbreviation for chemotherapy, capturing its essence as a treatment option.