What does pesticidal mean?
Pesticidal is an adjective meaning relating to substances or measures that kill or control pests, including insects, fungi, weeds, and other harmful organisms. It is especially used in agricultural, chemical, and scientific contexts: a pesticidal spray, treatment, or compound is intended to protect crops, livestock, stored food, or other vulnerable materials. The word is related to pesticide, a substance used to destroy pests, but the adjective describes a property, process, application, or product rather than naming the substance itself. Although pesticidal is often associated with chemicals, it can also refer to biological or other pest-control methods. In public discussion, the term may carry environmental or health concerns because pesticidal products can affect non-target organisms if they are improperly used. In careful writing, the nature and safety of a pesticidal treatment are often specified.
adjectiveRelating to or used for killing pests, especially insects, fungi, weeds, or other organisms considered harmful. Pesticidal products or treatments are intended to destroy or control such organisms.
- Relating to or used for destroying or controlling pests.
"The farmers used a pesticidal spray to protect the crops from insect damage."
"The pesticidal properties of the compound protected the stored grain from weevils."
"Careful testing is needed to determine whether a product is safe and effective for pesticidal use."
Pesticidal means “designed to kill pests,” while pesticide names the substance that does the killing.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pesticidal come from?
Pesticidal was formed in the 19th century by adding the suffix -al to pesticide. The underlying element pesticide combines pest with the Latin-derived suffix -cide, meaning “killer.” Related English words such as insecticidal, fungicidal, and herbicidal share the same -cidal root, reflecting their shared sense of killing or controlling particular kinds of organisms.
Related word forms
How pesticidal is actually used
Pesticidal is a formal technical adjective, especially common in agriculture, chemistry, and environmental science. It is usually used of a substance, treatment, application, or property.