Verb
To come into forcible contact with another object.
Noun
(1) The effect of a threat on an organizations mission and business objectives. A measure of the effect of an incident, problem, or change on business processes. Impact is often based on how service levels will be affected. Impact and urgency are used to assign priority.
(2) The magnitude of harm that can be expected to result from the consequences of unauthorized disclosure of information, unauthorized modification of information, unauthorized destruction of information, or loss of information or information system availability.