i Register
In some senses, breakthru is marked as US. Watch for register when choosing this word.
adj
Alternative spelling of breakthrough.
a breakthru technological advance
The Breakthru Battalion
noun
Alternative 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.
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.
Alternative spelling of breakthrough (major progress, great innovation).
The role of aluminum native oxide breakthru was studied.
Tenuous breakthrus were made in the U.S.