the ceremonial breaking of the ground to formally begin a construction project
"The mayor and several dignitaries attended the groundbreaking ceremony to officially kick off the new library's construction."
A ceremony to mark the beginning of construction.
"The mayor cut the ribbon at the groundbreaking for the new library today."
being or producing something like nothing done or experienced or created before
"stylistically innovative works"
"innovative members of the artistic community"
"a mind so innovational, so original"
Innovative; new, different; doing something that has never been done before.
"The team's groundbreaking research finally proved that solar panels could power entire cities without any battery storage."