IPA: /ˈtreɪlˌbleɪzɪŋ/
KK: /ˈtreɪlˌbleɪzɪŋ/
Describing something that is innovative or pioneering, often leading the way for others to follow.
The scientist received an award for her trailblazing research in renewable energy.
Trailblazing → It is formed from "trail" (from Old French *traille*, meaning a path or track) and "blazing" (from "blaze" which comes from Old English *blæse*, meaning to shine or to make a mark). The word "trailblazing" refers to the act of creating a new path or leading the way, often in a pioneering or innovative manner.
Think of someone making a 'path' ('trail') and 'shining' ('blazing') a light on it, which helps you remember that trailblazing means to lead the way or create a new path.