word \ multi \ rust \ oxy \ sphero

oxy	sphero	rust
sharp, pointed	ball	a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water any of various fungi causing rust disease in plants