0 used to form words referring to substances that kill a particular thing: --
Like Oedipus, he is a patricide: a father-killer.
It is a story of civil war and fratricide.
This new termiticide relies on low concentrations of naphthalenic compounds to kill the termites.
They hope to develop a microbicide that kills or blocks HIV.
A high school student had to go to hospital after being doused by a cloud of herbicide that city employees were spraying on nearby grass.
To prevent the algae from returning, consider installing zinc roof strips. The oxides that wash off the strips act as an algicide.