From Longman Dictionary of Contemporary Englishldoce_118_efood chainˈfood chain noun → the food chain
Examples from the Corpus
food chain• The only true amateurs left are the ones on the bottom end of the highlights-film, commercial-endorsement food chain.• Those higher on the political food chain, such as manufacturers and oil companies, will benefit most.• Evidence has also emerged that oil has entered the food chain after being ingested by fish such as salmon.• Haulage firms would then be allowed to take cattle to abattoirs, with the animals being slaughtered before entering the food chain.• The fox is needed in the food chain.• Its scientists next plan to assess whether potential contamination carried in air or the food chain could be affecting islanders' health.• Environmentalists have warned that dioxins accumulate in fat and milk and will work their way through the food chain. 