AllFirefighter Glossary (A–Z)

Practical definitions for Fireground operations, EMS/medical, Hazmat/CBRN, and SCBA/apparatus terminology.

Glossary Hubs
Browse terms by operational domain.

Fireground Operations

Core tactics, command, suppression, ventilation, search, and water supply terminology used on the fireground.

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EMS & Medical

Patient care, assessment, interventions, triage, and EMS system terms commonly used by firefighter/medics.

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Apparatus, Gear & SCBA

PPE, SCBA, apparatus components, hose, nozzles, tools, and operational equipment terminology.

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Hazmat & CBRN

Hazardous materials, decon, isolation zones, UN/ERG concepts, and CBRN terminology.

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