backdraft
BAK-draft
/ˈbæk.dræft/
An explosive event caused by the sudden introduction of oxygen into an oxygen-starved, fire-filled room.
Describes a specific, dangerous tactical hazard where smoldering fire violently ignites when fresh air enters.
The story behind the word. A modern compound created in American English emergency service jargon, combining 'back' (reverse direction) and 'draft' (air stream) to describe air rushing backward into a fire structure.
Word relationships
- smoke explosion: A smoke explosion can occur without an enclosed space sudden oxygen influx, whereas backdraft depends on fresh oxygen entering an oxygen-depleted space.
Commonly confused with
- flashover: A flashover occurs when all exposed surfaces reach ignition temperature simultaneously, whereas backdraft requires fresh oxygen entering an oxygen-starved room.
Collocations
- backdraft explosion
- risk of backdraft
- backdraft conditions
Example sentences
- "Opening a door without checking its heat level can trigger a catastrophic backdraft." Firefighter Training
- "Firefighters ventilated the roof first to allow trapped gases to escape and prevent a backdraft." Tactical Operations
Memory hook
BACK-DRAFT means air pulled BACK into a fire causing a DRAFT explosion. Air pulled back fires up.
When not to use
Do not use for simple wind gusts or typical drafts blowing through a door.
Fun facts
- Yellowish-brown smoke around doors and windows with soot-stained glass are key indicators of impending backdraft conditions.
Explore more words
combustion, microburst, ventilation, wildfire, flammable, cavitation
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