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European Definitions


Mitigation is the limitation of any negative consequence of a particular event (refers to ISO/IEC Guide 73). [1]

The EU EURAM project defined Risk mitigation as:

Action of reducing a risk by implementing security controls, taking assurance measures, avoiding the risk, or transferring the risk to another party. [2]

Other International Definitions


The lessening or limitation of the adverse impacts of hazards and related disasters. [3]


The lessening or limitation of the adverse impacts of hazards and related disasters. [4]

The adverse impacts of hazards often cannot be prevented fully, but their scale or severity can be substantially lessened by various strategies and actions. Mitigation measures encompass engineering techniques and hazard-resistant construction as well as improved environmental policies and public awareness. It should be noted that in climate change policy, “mitigation” is defined differently, being the term used for the reduction of greenhouse gas emissions that are the source of climate change.

Mesure d’atténuation: La réduction ou la limitation de l’impact négatif des aléas et des catastrophes. [5]

Митигация: Уменьшение или ограничение отрицательного воздействия угроз и связанных с ними бедствий. [6]

Mitigación: La disminución o la limitación de los impactos adversos de las amenazas y los desastres afines. [7]

التخفيف : التقليل أو الحد من الأثر السلبي للأخطار والكوارث المتعلقة بها. [8]

Mitigasi: Pengurangan atau pembatasan dampak-dampak merugikan yang diakibatkan ancaman bahaya dan bencana terkait. [9]

Pengurangan: Mengurangkan atau menghadkan kesan buruk bahaya dan bencana yang berkaitan. [10]

National Definitions


Mitigation are measures taken in advance of a disaster aimed at decreasing or eliminating its impact on society and environment. [11]


Actions taken to reduce the impact of disasters in order to protect lives, property and the environment, and to reduce economic disruption.

Activités visant à réduire les impacts de catastrophes pour protéger la vie, les biens et l’environnement, et pour réduire les perturbations économiques. [12]


Mitigation is a part of risk management and includes all actions taken to eliminate or reduce the risk to people, property and the environment from the hazards which threaten them. [13]

Kingdom of Saudi Arabia

Risk mitigation is prioritizing, evaluating, and implementing the appropriate risk-reducing controls/countermeasures recommended from the risk management process. [14]


Mitigación: Es el resultado de la aplicación de un conjunto de medidas tendientes a reducir el riesgo y a eliminar la vulnerabilidad física, social y económica. [15]


Risk Mitigation: Prioritizing, evaluating, and implementing the appropriate riskreducing controls/countermeasures recommended from the risk management process. [16]

Republic of Trinidad & Tobago

The lessening or limitation of the adverse impacts of hazards and related disasters. [17]

United Kingdom (UK)

Mitigation describes action to reduce the likelihood of an event occurring or reduce the impact if it does occur. [18]

This can include reducing the causes of climate change (eg emission of greenhouse gases); as well as reducing future risk associated with climate change.

United States

Application of measure or measures to reduce the likelihood of an unwanted occurrence and/or its consequences. [19]
Prioritizing, evaluating, and implementing the appropriate risk-reducing controls/countermeasures recommended from the risk management process. [20]
Activities providing a critical foundation in the effort to reduce the loss of life and property from natural and/or manmade disasters by avoiding or lessening the impact of a disaster and providing value to the public by creating safer communities. [21] Mitigation seeks to fix the cycle of disaster damage, reconstruction, and repeated damage. These activities or actions, in most cases, will have a long-term sustained effect.
Activities taken to eliminate or reduce the probability of the event, or reduce its severity or consequences, either prior to or following a disaster/emergency. [22]

Other Definitions

Ontario (Canada)

Mitigation are actions taken to reduce the adverse impacts of an emergency or disaster. [23]

Such actions may include diversion or containment measures to lessen the impacts of a flood or a spill.

Atténuation: mesures prises afin de réduire les effets d’une situation d’urgence ou d’un sinistre. [23]

Il peut s’agir notamment de mesures de confinement ou de détournement afin de réduire l’impact d’une inondation ou d’un déversement accidentel.


An intervention to reduce the anthropogenic forcing in the climate system; it includes strategies to reduce greenhouse gas sources and emission and enhancing greenhouse gas sinks. [24]

Standard Definition

ISO/PAS 22399:2007

Limitation of any negative consequence of a particular incident. [25]

ISO 22300:2012(en)

Measures taken to prevent, limit and reduce impact of the negative consequences of incidents, emergencies and disasters.[26]

See also


  1. ENISA Risk Glossary
  2. EU EURAM project
  3. Caribbean Disaster Emergency Management Agency (CDEMA) Regional Comprehensive Disaster Management Strategy and Results Framework 2014-2024
  4. 2009 UNISDR Terminology on Disaster Risk Reduction
  5. UNISDR glossary
  6. UNISDR glossary
  7. UNISDR glossary
  8. UNISDR glossary
  9. UNISDR glossary in Bahasa
  10. UNISDR glossary in Malay
  11. Australian Emergency Management Glossary, Emergency Management Australia (1998)
  12. Vocabulaire de la gestion des urgencies/Emergency Management Emergency Management Vocabulary 281 (2012)
  14. Developing National Information Security Strategy for the Kingdom of Saudi Arabia NISS draft 7
  15. Glosario de Términos para la Formulación de Proyectos Ambientales, Peru, 2012 / Fuente: Dirección General de Ordenamiento Territorial-MINAM.
  17. Comprehensive Disaster Management Policy Framework for Trinidad and Tobago
  18. The National Adaptation Programme: Making the country resilient to a changing climate, UK Government (2013)
  19. DHS Risk Lexicon 2010 Edition, September 2010
  20. Source: CNSSI-4009; NIST SP 800-30; NIST SP 800-39
  21. National Incident Management Plan (core)
  22. Source: NFPA 1600-4: Standard on Disaster/Emergency Management and Business Continuity Programs
  23. 23.0 23.1 Province of Ontario’s Emergency Management Glossary of Terms
  24. Preparing for a Changing Climate: Second Consultation to Inform Scotland's Climate Change Adaptation Framework
  25. ISO/PAS 22399:2007 Societal security - Guideline for incident preparedness and operational continuity management.
  26. ISO 22300:2012(en) Societal security — Terminology