The word 'toxicological' is a modern scientific term built from classical components. Its core, 'toxico-', traces back to the Greek toxikon pharmakon, meaning "poison for arrows," linking poison directly to the weaponry of ancient warfare. The combining form '-logy' derives from Greek logos, signifying a systematic study or discourse. When combined with the adjectival suffix '-ical', the term literally means "pertaining to the science of poisons." This etymological journey encapsulates the evolution from a specific, tangible substance (arrow poison) to a broad, abstract field of scientific inquiry dedicated to understanding the harmful effects of chemicals on living organisms.

Structure: toxico (poison) + log (study of) + ical (adjective suffix) - toxico: From Greek toxikon (poison for arrows), from toxon (bow). Denotes poison or toxicity. - log: From Greek -logia, from logos (word, reason, discourse). Denotes a branch of study or science. - ical: A compound suffix from Latin -icus + -alis, forming adjectives meaning "of or pertaining to."