groundbreaking

[ ground-brey-king ]
/ ˈgraʊndˌbreɪ kɪŋ /

noun

the act or ceremony of breaking ground for a new construction project.

adjective

of or relating to such a ceremony.
originating or pioneering a new endeavor, field of inquiry, or the like: Pasteur's groundbreaking work in bacteriology.

Origin of groundbreaking

First recorded in 1905–10; ground1 + break + -ing1, -ing2

Example sentences from the Web for groundbreaking