From Longman Dictionary of Contemporary Englishtrailblazertrail‧blaz‧er /ˈtreɪlˌbleɪzə $ -ər/ noun [countable] FIRSTsomeone who is the first to discover or develop new methods of doing something a trailblazer in the field of medical research —trailblazing adjective
Examples from the Corpus
trailblazer• Badolato was supposed to be a trailblazer.• King was a trailblazer, mixing the rolling blues of his native Texas with the hard-edged street blues of Chicago.• Ah, d'Arquebus was the bold trailblazer, was he not?• It should not be imagined, however, that Storni was a lone trailblazer in a male-dominated world of poetry.• a political trailblazerFrom Longman Business Dictionarytrailblazertrail‧blaz‧er /ˈtreɪlˌbleɪzə-ər/ noun [countable] someone who is the first to do something new, such as develop a new method or productHis radical management methods gave him the reputation of a trailblazer among American executives. 