1pi·o·neer 
/ˌpajəˈniɚ/ noun
plural pi·o·neers /ˌpajəˈniɚ/ noun [count] 1 : a person who helps create or develop new ideas, methods, etc. — often + in ▪ They were pioneers in the field of American medicine. ▪ She was a pioneer in the development of new cancer treatments. — often + of ▪ a pioneer of digital technology 2 : someone who is one of the first people to move to and live in a new area
▪ the pioneers who settled in the American West in the 19th century
▪ the pioneers who settled in the American West in the 19th century
— pioneer adjective always used before a noun
▪ pioneer surgeons ▪ the pioneer days of the old West
▪ pioneer surgeons ▪ the pioneer days of the old West
