dioxin contamination
Refers to environmental or food contamination by dioxins, a group of toxic chemical compounds. Often used in news and scientific contexts.
Dioxin contamination was detected in the soil.
Due to dioxin contamination, shipments of agricultural products from that area were halted.
Compound of ダイオキシン (dioxin, from English) and 汚染 (pollution/contamination).