Definition: The word "anticancerous" refers to substances that are less likely to cause cancer or other types of tumors when exposed to radiation, chemicals, or physical stimulation. It means a substance has low risk for causing cancer when it is exposed to certain conditions (such as radiation treatment) or stimuli. These conditions include exposure to sunlight, pollution, and chemical agents. The word is often used in medical contexts to describe substances that have an inhibitory effect on the growth of cancer cells.