English

Definition of crucially adverb from the Oxford Advanced Learner's Dictionary

  

crucially

 adverb
adverb
BrE BrE//ˈkruːʃəli//
 
; NAmE NAmE//ˈkruːʃəli//
 
 
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in a way that is extremely important crucially important The plants need light and, crucially, a flow of cool air.