Focused Ion Beam 
Forward Indicator Bit 
Forwarding Information Base 
free into barge 
Financial Intelligence Branch 
FEBI-BILSTEIN 
Free into bunkers 
fibrin 
fibrinogen 
Force Intelligence Bureau 
FORTRAN Information Bulletin 
Forward Indication Bit 
Fast Information Block 
Fast Input Buffering 
Fast Ion Bombardment 
fecal indicator bacteria 
Fédération des Industries Belges 
Fédération Internationale de Béton 
Fellow of the Institute of Bankers 
Fellow of the Institute of Biology 
fibrillation 
fibrinogen concentration 
fibroblasts 
fibronectin 
Fibula 
fibular 
File Information Block 
Financial Investigation Bureau 
fleet intelligence broadcast 
flight information bulletin