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groundbreaking

[ ground-brey-king ]
/ ˈgraʊndˌbreɪ kɪŋ /
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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.
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Origin of groundbreaking

First recorded in 1905–10; ground1 + break + -ing1, -ing2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use groundbreaking in a sentence

British Dictionary definitions for groundbreaking

ground-breaking

adjective
innovativea ground-breaking novel
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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