Chemotherapy refers to the treatment of disease by means of chemicals that have a specific toxic effect upon the disease producing microorganisms (antibiotics) or that selectively destroy cancerous tissue (anticancer therapy).
See also:
"Chemotherapy" is in the UNSPSC Code "42143300"
Chemotherapy equipment and supplies
Other /More definition:
Chemotherapy refers to the treatment involving taking medications with the aim of disabling cancer growth.