Wiktionary
ground-breaking
a. (context idiomatic English) innovative, different than other things of its type.
Usage examples of "ground-breaking".
Not only was he the finest virologist on Archaria III, he had headed up half-a-dozen ground-breaking studÂies on Plimpton's disease—including several she'd read.
Between 'Nam flashbacks and Freedom Rider reunions, Ellis coauthored the ground-breaking 1998 report "Jefferson Fathered Slave's Last Child.
So instead we go and watch the Tuesday afternoon double-bill of ground-breaking early silent film at the Arts Cinema.