Question

which word part means \stopping or controlling\? -stasis -penia isch/o

Explanation:

The suffix -stasis means stopping or controlling. For example, hemostasis means stopping of bleeding. The suffix -penia means deficiency (e.g., leukopenia - deficiency of white blood cells). The combining form isch/o means to hold back or block (e.g., ischemia - local deficiency of blood due to obstruction of circulation).

Answer:

-stasis