breakthru

1. USalternativenonstandardnot comparableAlternative spelling of breakthrough.

   a breakthru technological advance

   1 more example

   The Breakthru Battalion

   2010, Voris Weldon McBurnette, editor, The 108th Training Command, Government Printing Office, →ISBN, page 68

plural breakthrus

1. USalternativenonstandardAlternative spelling of breakthrough (advance through enemy lines).

   The curfew decree comes as the latest of a list of steadily tightening home front controls ordered since the German breakthru in Belgium.

   1945 February 20, “Byrnes Clamps War Curfew on Amusement”, in Tribune, Tribune

   1 more example

   A successful breakthru opens a "window of opportunity" to perform a variety of tactical maneuvers, many of which can leave the enemy at a disadvantage.

   2012, “Breakthru”, in Axis and Allies, archived from the original on 14 Jul 2012

2. USalternativenonstandardAlternative spelling of breakthrough (major progress, great innovation).

   Tenuous breakthrus were made in the U.S.

   2007, Stuart Ward, Strange Days Indeed: Memories of the Old World (Fiction), →ISBN, page 202

   3 more examples

   The role of aluminum native oxide breakthru was studied.

   1998, Michael Engelhard, Proceedings of the International Symposium on Thin Film Materials, Processes (Technology and Engineering), The Electrochemical Society, →ISBN, page 145

   New ZPE Breakthru—Magnetic Resonance Amplifier

   2008, Paul A. LaViolette, Secrets of Antigravity Propulsion, Inner Traditions, →ISBN, page 477

   The have made the desert bloom … they have achieved more breakthrus in technology and in agriculture.

   2008, Franz Ucko, My God Works Miracles for Me, AuthorHouse, →ISBN, page 201