/ ˈgraʊndbreɪkɪŋ/ adjective
[ only before noun ] making new discoveries; using new methods :
a groundbreaking piece of research
/ ˈgraʊndbreɪkɪŋ/ adjective
[ only before noun ] making new discoveries; using new methods :
a groundbreaking piece of research
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005