From Longman Dictionary of Contemporary Englishact of Godact of GodDNan event that is caused by natural forces, such as a storm, flood, or fire, which you cannot prevent or control → actFrom Longman Business Dictionaryact of Godˌact of ˈGod noun (plural acts of God) [countable] LAWINSURANCE a natural event such as a storm or an EARTHQUAKE. No one can be held to be legally liable for damage caused by an act of God, and insurance companies will not usually make payments for such damageThe Court held that the rainfall was not an act of God and that the Corporation were liable.