groundbreaking

/หˆษกษนaสŠndbษนeษชkษชล‹/
noun
  1. 1

    A ceremony to mark the beginning of construction.

  2. 2

    The point at which construction begins.

adjective
  1. 1

    Innovative; new, different; doing something that has never been done before.

    โ€œThe latest model includes several groundbreaking features and improvements.โ€

Source: https://en.wiktionary.org/wiki/groundbreaking