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Douglas Harper's Etymology Dictionary
weapons of mass destruction

"nuclear, biological and chemical weapons" attested by 1946, apparently first used (in Russian) by the Soviets.\n\nThe terms "weapons of mass destruction" and "WMD" mean chemical, biological, and nuclear weapons, and chemical, biological, and nuclear materials used in the manufacture of such weapons.

[United States Code: Title 50, "War and National Defense," chapter 43, § 2902, 2009]

Wiktionary
weapons of mass destruction

n. (plural of weapon of mass destruction English)

Wikipedia
Weapons of Mass Destruction (album)

Weapons of Mass Destruction is the fifth album by rapper Xzibit, released December 14, 2004.

Usage examples of "weapons of mass destruction".

The Air Force spokesperson promptly held a press conference to defuse Saddam's natural reaction that America had initiated first use of weapons of mass destruction.

Makers could burrow deep into a moon or planetary surface and create weapons of mass destruction out of the raw materials available.

He did not doubt that the attackers, whoever they were, possessed such weapons of mass destruction or the ability to manufacture them.

In the years they had been stranded in the Maw, Sivron had never felt as though she understood his mission to create new weapons of mass destruction for Grand Moff Tarkin--to whom they both owed enormous favors.

In the real world of PPGs and weapons of mass destruction, let alone that of the destructive power possessed by the Shadows, owning or not owning a pike will hardly be a deciding factor in whether or not a Ranger can do his job.

If the Kilrathi turned to weapons of mass destruction on any major scale .

We're going to enforce to the hilt the ban on free companies with space-combatant ships and weapons of mass destruction.

This squandering of untold wealth on weapons of mass destruction, while human beings go hungry and homeless, must end, and end soon.

In ages long past, it was said, the ancient ancestors of the Bujun were in possession of weapons of mass destruction and in the cavern were buried the remnants that survived the holocaust that had consumed nine-tenths of mankind.