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Definition of food chain noun from the Oxford Advanced Learner's Dictionary

food chain

noun
 
/ˈfuːd tʃeɪn/
 
/ˈfuːd tʃeɪn/
(usually the food chain)
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  1. a series of living creatures in which each type of creature feeds on the one below it in the series
    • Insects are fairly low down (on) the food chain.
    • Pesticides work their way up the food chain from plants, through insects and birds to humans.
    • efforts to ensure that dioxins do not enter the food chain
    Topics Farmingb2
  2. (informal) a system or structure in which the people or organizations that are part of it are seen as having different levels of importance, success, etc.
    • These guys are at the top of the food chain when it comes to earnings.
  3. the series of stages that food passes along as it goes from being grown or produced to being sold and then eaten
    • They are focused on ensuring that contaminated crops do not enter the food chain.
See food chain in the Oxford Advanced American DictionarySee food chain in the Oxford Learner's Dictionary of Academic English
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