Step 1: Understanding the Concept:
Cancerous tumors are characterized by uncontrolled cell division and the ability to invade other tissues.
Step 2: Detailed Explanation:
Unlike benign tumors which remain localized, malignant tumors are invasive.
Cells from the primary tumor break off and enter the circulatory system (blood or lymph).
These cells travel to distant organs, lodge there, and begin forming secondary tumors.
This destructive property is known as metastasis.
Step 3: Final Answer:
The property is metastasis.