Which term refers to the measure of a pesticide's capacity to cause injury from a single exposure?

The term that refers to the measure of a pesticide's capacity to cause injury from a single exposure is acute toxicity. Acute toxicity specifically addresses the immediate effects that can result from a short-term, high-level exposure to a toxic substance, including pesticides. This measure helps in assessing how dangerous a chemical can be after a single dose or exposure, which is crucial for understanding safety and health risks associated with pesticides.

Chronic toxicity, in contrast, involves the effects that result from long-term exposure to lower doses of a toxic substance, making it less relevant when discussing single exposures. Environmental hazard refers to the potential for a pesticide to harm non-target organisms and ecosystems, rather than focusing on toxicity levels for a single exposure. Exposure risk encompasses broader considerations about the likelihood and severity of harm that can occur, but it does not specifically define the toxic potential after a single incident. Therefore, acute toxicity is the most accurate term for this concept.