Definitions

1. adjective

relating to or designed to prevent or treat cancer

“The researchers developed an antitumor drug that showed promising results in clinical trials.”

2. noun

a substance or agent that prevents or treats cancer

“The patient was given an antitumor medication to help alleviate her symptoms.”

3. noun

a substance or agent that prevents or treats cancer cells or tumors

“The antitumor therapy involved a combination of chemotherapy and radiation.”