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Definition of polytunnel noun from the Oxford Advanced Learner's Dictionary

polytunnel

noun
 
/ˈpɒlitʌnl/
 
/ˈpɑːlitʌnl/
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  1. a long low structure covered with plastic, used for growing seeds or young plants outdoorsTopics Farmingc2
See polytunnel in the Oxford Advanced American Dictionary
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