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Definition of Petri dish noun from the Oxford Advanced Learner's Dictionary

 

Petri dish

 noun
noun
BrE BrE//ˈpetri dɪʃ//
 
; NAmE NAmE//ˈpetri dɪʃ//
 
; BrE BrE//ˈpiːtri dɪʃ//
 
; NAmE NAmE//ˈpiːtri dɪʃ//
 
 
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a shallow covered dish used for growing bacteria, etc. in Word Origin late 19th cent.: named after Julius R. Petri (1852–1922), German bacteriologist.
See the Oxford Advanced American Dictionary entry: Petri dish