Definition of trailblazer noun from the Oxford Advanced American Dictionary

 

trailblazer

 noun
noun
NAmE//ˈtreɪlˌbleɪzər//
 
 
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a person who is the first to do or discover something and so makes it possible for others to follow a trailblazer in the field of genetic engineering compare blaze a trail
trailblazing
 
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adjective [usually before noun] trailblazing scientific research
See the Oxford Advanced Learner's Dictionary entry: trailblazer