The act or ceremony of breaking ground to begin a construction project.
Of, relating to, or being a ceremony of breaking ground.
Characterized by originality and innovation: a groundbreaking technology.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.