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Petri dish

noun [C]
 
 
/ˈpet.riˌdɪʃ/ US  /ˈpiː.tri-/

Definition

a small, clear, round dish with a cover, used in scientific tests especially for growing bacteriaLaboratory equipment
(Definition of Petri dish noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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