[ ground-brey-ker ]
/ ˈgraʊndˌbreɪ kər /


a person who is an originator, innovator, or pioneer in a particular activity.
an original idea, product, or the like that leads to or makes possible further developments, growth, improvements, etc.

Origin of groundbreaker Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for groundbreaker