groundbreaking

adj, noun — 3 senses

adj

CA, US, UK /ˈɡɹaʊndˌbɹeɪkɪŋ/ · AU /ˈɡɹæɔndˌbɹæɪkɪŋ/

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

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

noun

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

The point at which construction begins, by digging into the ground.

A ceremony to mark the beginning of construction.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.