pioneering
Webster's Dictionary (GCIDE)
Pioneering \Pi`o*neer"ing\, a. groundbreaking; originating; -- of efforts that begin work in a field or on a topic not previously widely known. [PJC]
Pioneer \Pi`o*neer"\, v. t. & i. [imp. & p. p. Pioneered; p. pr. & vb. n. Pioneering.]
1.To go before, and prepare or open a way for; to act as pioneer. [1913 Webster]
2.to take part in the early development of; to break ground in; to invent or originate. [PJC]