There is a medical word from same root:
opsonin n.
obs. opson(ium), relish (< L < Gr opsbnion, food, provisions < opsbnein, to buy food < opson, meat or any food eaten with bread < o3, together with + *psbn, food, bread, akin to psbmos, mouthful) + 3IN16 a substance in blood serum acting on bacteria and foreign cells to make them more liable to destruction by phagocytes

When you have seen the root, does it make any sense to pronounce it "mo Nopsony?