The ceremonial breaking of the ground to formally begin a construction project. It is sometimes carried out by an official who digs the first spadeful of dirt from the ground, to begin the preparatory excavation work.

the process of breaking the ground (breaking ground) in order to begin construction; a ceremonial event to signify start of construction. definition of groundbreaking defined What does it mean to break ground at startup

Groundbreaking is a traditional ceremony in many cultures that celebrates the first day of construction for a building or other project. Such ceremonies are often attended by dignitaries such as politicians and businessmen. The actual shovel used during the actual groundbreaking is often a special ceremonial shovel meant to be saved for subsequent display.

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"