Foreign Service Institute Facility Science Instrument Federal Systems Integrators File System Interface Final Systems Installation Flight Software Integration foam stability index Food Safety Initiative Forest Survey of India Frequency Subset Indicator Fuel Straight Injection Fuel stratified ignition Functional Status Index Facility Subsystem Identifier fasting serum insulin fasting specific insulin Fatigue Symptom Inventory Fear of Self-Injecting Federal Stock Item Federation of Sussex Industries Fellow of the Surveyors Institute FFFunctionally Significant Item Field Service Instruction Financial - Services Industry Financial Services Industry Financial System Inquiry Financial Systems Integration flame spread index Flexible Solutions International Inc. Flight Safety Instruction
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