Firefighter Glossary: Browse by Category
300+ practical definitions organized by operational domain — Fireground tactics, EMS/Medical, Hazmat/CBRN, and SCBA/Apparatus. Search a term or open a hub below.
374Published terms
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Browse all terms on the Glossary (A–Z). Visit Tools Hub.
Glossary Hubs
Browse terms by operational domain. Each hub links to relevant tools.
Fireground Operations
Core tactics, command, suppression, ventilation, search, and water supply terminology used on the fireground.
EMS & Medical
Patient care, assessment, interventions, triage, and EMS system terms commonly used by firefighter/medics.
Hazmat & CBRN
Hazardous materials, decon, isolation zones, UN/ERG concepts, and CBRN terminology.
Apparatus, Gear & SCBA
PPE, SCBA, apparatus components, hose, nozzles, tools, and operational equipment terminology.
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Chemical Transport RegulationsView definition, usage notes, and related operational context.DecontaminationView definition, usage notes, and related operational context.Emergency Response Guidebook (ERG)View definition, usage notes, and related operational context.Fire Attack GroupView definition, usage notes, and related operational context.Fire Attack ModeView definition, usage notes, and related operational context.fire suppression systemView definition, usage notes, and related operational context.firefighter harnessView definition, usage notes, and related operational context.Firefighter Personal Alert Safety System (PASS)View definition, usage notes, and related operational context.