This page will be expanded periodcally. If you have any fire protection or fire pattern investigation terms that you wish to be considered in the future, please e-mail same. Go to E-mail to send your definitions. Accelerant - Substance used to initiate and develop a fire.
Flammable liquids are the most common accelerants.
Adiabatic Process - Physical or chemical process without the loss or gain of heat. Arrhythmia - Absence of rhythm, applied especially to any variation from the normal rhythm of the heart beat. Asphyxia - Unconsciousness resulting from anoxia or hypoxia and increased carbon dioxide in blood and tissue. The minimum AIT is determined by an ASTM test method. AIT relates to external heating whereas spontaneous ignition temperature relates to self heating.