Firing Rate 2 topics · 2 sources ScienceEnergyThe amount of BTUs/hour or kWs produced by a heating system from the burning of a fuel.US DOE Office of Energy Efficiency & Renewable Energy — Glossary of Energy-Related Terms retrieved 2014-05-26 Cite TechnologyDefenseThe number of missiles fired per site per minute.DoD Missile Defense Agency — MDA Glossary Cite