groundbreaking

From ground +‎ breaking, in reference to the practice of breaking ground at the beginning of a new building or construction.

• IPA^(key): /ˈɡɹaʊndbɹeɪkɪŋ/

• Audio (US):

  (file)

groundbreaking (comparative more groundbreaking, superlative most groundbreaking)

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

   The latest model includes several groundbreaking features and improvements.

groundbreaking (countable and uncountable, plural groundbreakings)

1. The point at which construction begins, by digging into the ground.
2. A ceremony to mark the beginning of construction.

• break ground
• cutting edge

• breaking ground