A penetration of an enemy's defense in depth and strength

Usage examples of breakthrough.

Rundstedt, commander of Army Group A, the main force which had launched the breakthrough over the Meuse, backed him up when they conferred later in the day.

The situation has become more critical as the result of the breakthrough between Maloyaroslavets and Borovsk.

No one tries to conceal from me the unhappiness over the news of the breakthrough on the Russian front.

German front in Normandy would collapse and that a breakthrough into Germany by the Allies could not be checked .

Hodges, advanced with equal speed into southeastern Belgium, reaching the Meuse River, from which the devastating German breakthrough had begun in May 1940, and capturing the fortresses of Namur and Liege, where the Germans had no time to organize a defense.

Aachen, the old imperial capital, the seat of Charlemagne, surrendered to First Army on October 24 after a bitter battle - the first German city to fall into Allied hands - but the Americans had been unable to achieve a breakthrough to the Rhine.

The offensive would strike swiftly through the Ardennes, where the great breakthrough in 1940 had begun, and which German intelligence knew to be defended only by four weak American infantry divisions.

He had assembled some twenty-eight divisions, including nine panzer divisions, for the Ardennes breakthrough, with another six divisions allotted for an attack in Alsace to follow the main offensive.

In the era of Big Science, breakthrough technical papers were more likely to carry dozens and dozens of coauthors.

A mere accident, right when he was about to make a breakthrough on the dangerous Soviet work he had sworn never to repeat?

Lord eventually 72 would achieve a major breakthrough by developing an important new drug.

Also like others, he had long dreamed of achieving, personally, a major breakthrough, a discovery which would push back dramatically the frontiers of knowledge and place his name in the honor roll of history.

Our last major breakthrough was with Lotromycin, nearly fifteen years ago.

And yet, he reasoned-reassured himself-despite the changes and fresh knowledge, the possibility of a titanic breakthrough with the work he had been doing still was possible, still could come at any time.

But supposing, after Harlow was discontinued, one of those other scientists had a sudden breakthrough, a breathtaking discovery which might bave happened at Harlow had they carried on.