Abnormal cell division that does not pose a threat to surrounding tissues is termed

Abnormal cell division that does not pose a threat to surrounding tissues is termed benign.

Explanation:

Benign cell division can be described as a cell division that can either be a tumour or just growth of certain cells which are not cancerous. In contrast to the cancerous or malignant cell divisions that invade nearby tissues too, a benign cell division is not harmful as it doesn't affect the surrounding tissues.

In the field of biology, the term benign is often used when a certain condition is not threatening to the patient's health.