TSIF

AcronymDefinition
TSIFThe Sky Is Falling
TSIFTooth Surface Index of Fluorosis
TSIFTSA (Transportation Security Administration) Systems Integration Facility (US DHS)
TSIFTransport Stream Interface
TSIFTrawsfynydd Strategic Integrated Framework (nuclear decommissioning project)
TSIFThank Science It's Friday
TSIFTrichotillomania Support Information and Friends (Pittsburgh, PA)
TSIFThis Space Intentionally Filled