|—n combining form|
|1.||indicating a person or thing that kills: insecticide|
|2.||indicating a killing; murder: homicide|
|[from Latin -cīda (agent), -cīdium (act), from caedere to kill]|
|—adj combining form|
Act of killing: suicide.
A suffix that means "a killer of." It is used to form the names of chemicals that kill a specified organism, such as pesticide, a chemical that kills pests.