IAAI-FIT Test Vocab | 180 Terms with Accurate Definitions | Latest 2025/2026 Update.

IAAI-FIT Test Vocab | 180 Terms with Accurate i,- i,- i,- i,- i,- i,- i,- i,-




Definitions | Latest 2025/2026 Update. i,- i,- i,- i,-




Ambient i,-i,- i,- something/someones surrounding environment i,- i,-




Ampacity the maximum current in amperes that a conductor
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can continuously carry without going over it's max temperature
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rating


Ampere a unit of electric current equivalent to 1 coulomb
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(6.24x1018 electrons) per second i,- i,- i,-




Arc a high-temperature, glowing electric particle (spark)
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discharged across a circuit gap or through a fuel
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Arc Mapping
i,- evaluating circuit configurations for information
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about what might have caused the fire
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Arc Site
i,- the location on a conductor that receives damage
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from arcing i,-




Arcing through char i,- i,- i,-i,- i,- when arcing is conducted through char
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,Area of Origini,- the geographic location of a fire scene in
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which the point of origin is located
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Arrow Pattern a fire pattern on the cross section of burned
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wooden structural components, looks like a triangle with the
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bottom being most burned out and the top being least burned
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out


Arson the crime of maliciously or intentionally starting a fire
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or explosion
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Autoignition i,-i,- i,- heated combustion without a spark or flame
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Autoignition Temperature lowest temperature that a material
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can start ignition spontaneously
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Approved i,-i,- i,- acceptable


Absolute Temperature i,- i,-i,- i,- a temperature measured in Kelvins (K)
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or Rankines (R)
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, Accelerant a fuel or oxidizer intention used to initiate a fire or
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increase its spread i,- i,-




Accidental Fire an unplanned fire or a chance occurrence
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arising from unintentional circumstances
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Active Fire Protection System
i,- a mechanical or electric system
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that activates under fire circumstances (ex. detectors and
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sprinklers)




Backdraft/Smoke Explosion a deflagration explosion caused i,- i,-i,- i,- i,- i,- i,- i,-



by adding oxidation to an oxygen deficient fire
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Bead a blob of re-solidified metal that was melted by arcing
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at the end of circuit conductor remains
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Blast Pressure Front
i,- the high pressure leading edge of i,- i,-i,- i,- i,- i,- i,- i,- i,- i,-



explosion that causes damage by pushing out and displacing the
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normal ambient pressure i,- i,-




BLEVE i,-i,- i,- Boiling Liquid Expanding Vapor Explosion i,- i,- i,- i,-