pioneering
adj. B2 Upper Intermediate US //ˌpaɪəˈnɪɹɪŋ// UK //paɪənˈiəɹɪŋ// pi·o·neer·ing
adj. being the first to do something new or important. You use this word to describe people or ideas that lead the way.
adj. relating to the first attempts to develop or explore a new area of activity. Typically used attributively before a noun.
She is a pioneering scientist in her field.
The pioneering engineers built the first bridge across the wide river.
Her pioneering work in renewable energy has inspired a new generation of researchers to pursue sustainable solutions.