pesticide
Meaning
a chemical substance used to kill insects and small animals that destroy crops
any substance used to destroy pests, such as insects, weeds, or fungi
Structure
Usage
farmers use pesticide to protect their crops from insects.
there are growing concerns about the environmental impact of certain pesticides.
always wear protective clothing when applying pesticide.
Etymology
the word pesticide is a modern compound formed from two classical latin roots. the first element, 'pest', derives from latin pestis, which referred to a deadly plague, pestilence, or any destructive nuisance. the second element, '-cide', comes from the latin combining form -cidium, related to the verb caedere meaning 'to cut down' or 'to kill'. when combined in english, the literal construction 'pest-killer' accurately reflects its function. this logical compounding follows a common pattern in english for creating agentive or instrumental nouns, such as in 'herbicide' or 'insecticide', specifying the target of the destructive action.
Analysis
pest originates from latin pestis, meaning plague or destructive thing, and functions as the base noun. the 'i' is a connecting vowel. cide originates from latin -cidium (from caedere, to cut, to kill), and functions as a combining form meaning killer or act of killing.