What does rodenticide mean?
A rodenticide is a substance used to kill rodents, particularly rats and mice. It may take the form of bait, a spray, or another pesticide intended for rodent control. Commercial rodenticides commonly contain anticoagulants, which prevent the clotting of blood and can cause fatal internal bleeding if ingested. Because such poisons may also harm people, pets, wildlife, and other animals, they are generally placed in secured bait stations and their use is regulated. The word combines “rodent,” referring to gnawing mammals, with the suffix “-icide,” meaning a substance that kills. In public discussion, “rodenticide” is often associated with household infestations, agricultural storage facilities, and the potential risks of accidental poisoning. It is more technical and precise than the everyday expression “rat poison,” although the latter remains a familiar synonym in informal use.
nounA poison or other substance used to kill rodents, especially rats and mice.
- A poison or other substance used to kill rodents.
"The technician placed rodenticide in several sealed bait stations around the warehouse."
"The rodenticide was stored in a locked cabinet away from children and pets."
"Careless use of rodenticide can poison non-target animals as well as rodents."
Used when referring to multiple substances, products, or applications of rodent poison.
"The building uses several rodenticides to control mouse populations."
The name literally means “rodent killer,” combining the animal targeted with the Latin-derived suffix -icide, meaning “killer.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does rodenticide come from?
Rodenticide was formed in the 19th century from “rodent” and the combining form “-icide,” from Latin -cīdium, meaning “a killing” or “killer.” “Rodent” itself comes through Latin rodens, from rodere, “to gnaw.” The same Latin root underlies English “eradicate,” originally meaning to uproot and later extended to remove or destroy completely.
Related word forms
How rodenticide is actually used
The term is used in agriculture, pest control, veterinary contexts, and public health. Its use is subject to legal restrictions in many countries, and access to concentrated products may require training or certification.
Easily confused with rodenticide
A rodenticide is used against rodents such as rats and mice, whereas an insecticide is used against insects.