Definition of "mass murder" [mass murder]

• The killing of a large number of people over a short period of time. (noun)

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• "Bush underlined our determination on WMD proliferation at his annual address to the UN General Assembly on September 23, 2003, mentioning both PSI and the G-8 Global Partnership, saying: The deadly combination of outlaw regimes and terror networks and weapons of mass murder is a peril that cannot be ignored or wished away."
• ""I know we had our bad episodes-the Roman Colosseum, the Spanish Inquisition and all that-but genocide and mass murder were never institutionalised, never part of our way of life."