AllFirefighter Glossary (A–Z)

Practical definitions for Fireground operations, EMS/medical, Hazmat/CBRN, and SCBA/apparatus terminology. Search a term or open a hub below.

76Published terms

IDLH (Immediately Dangerous to Life or Health)NewGeriatric AssessmentNew Medical DirectionNew Prehospital Stroke ScaleNew

4Categories

Fireground Operations39 EMS & Medical24 Hazmat & CBRN6 Apparatus, Gear & SCBA7

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Glossary Hubs

Your glossary is organized into a few focused hubs to keep navigation clean. Each hub includes quick links to relevant tools.

Fireground Operations

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

39

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Tools:

Hydrant FinderHydrant Flow CalculatorFire Flow CalculatorFriction Loss CalculatorAll Tools

EMS & Medical

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

24

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Tools:

EMS LocatorShift Schedule CalculatorCPAT Pacing CalculatorFirefighter BMI CalculatorAll Tools

Hazmat & CBRN

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

6

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Tools:

SCBA Air Time CalculatorFire Watch Log GeneratorPDP CalculatorAll Tools

Apparatus, Gear & SCBA

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

7

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Tools:

SCBA Air Time CalculatorAerial Ladder Reach CalculatorFriction Loss CalculatorPDP CalculatorAll Tools

Browse A–Z

Jump to a letter to view all published terms that start with it.

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Recently Updated

Fresh definitions and operational notes, prioritized by most recently added.

IDLH (Immediately Dangerous to Life or Health)Open definition and related operational context.Geriatric AssessmentOpen definition and related operational context.Medical DirectionOpen definition and related operational context.Prehospital Stroke ScaleOpen definition and related operational context.Primary SurveyOpen definition and related operational context.Capillary Refill TimeOpen definition and related operational context.Glasgow Eye ResponseOpen definition and related operational context.Hemostatic AgentOpen definition and related operational context.