Pesticide
Pesticide means any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest, or intended for use as a plant regulator, defoliant, or desiccant, other than any article that:
(1) Is a new animal drug under FFDCA section 201(w), or
(2) Is an animal drug that has been determined by regulation of the Secretary of Health and Human Services not to be a new animal drug, or
(3) Is an animal feed under FFDCA section 201(x) that bears or contains any substances described by paragraph (1) or (2) of this definition.
Source
40 CFR § 260.10
Scoping language
When used in parts 260 through 273 of this chapter, the following terms have the meanings given below: