Nocivas

Nocivas is a term used in Spanish and Portuguese as the feminine plural form of nociva, meaning harmful or noxious. As an adjective, it describes substances, agents, or effects that can cause damage to health, safety, or the environment. The root nociv- comes from Latin nocivus, from nocere, to harm. In regulatory and scientific contexts, phrases such as sustancias nocivas (Spanish) or substâncias nocivas (Portuguese) group chemicals, wastes, or conditions considered hazardous. In occupational health and environmental law, assessing nocivas involves hazard identification, exposure assessment, and risk management to protect workers and ecosystems. Common examples include toxic chemicals, carcinogens, biological hazards, noise, and radiation.

Usage varies by country: in both Spanish- and Portuguese-speaking regions, the term is widely understood in formal or technical discourse; in everyday speech it may be replaced by synonyms such as dañino (Spanish) or nocivo (Portuguese). The term is not typically used as a proper noun; when capitalized or used as a brand name, it is relatively rare and would be treated as a label rather than a descriptor. See also nocivo, dañino, toxicología, seguridad y salud ocupacional.