1. The internal counterintelligence agency of the Russian Federation and successor to the Soviet KGB; formerly led by Vladimir Putin
   - Federal Security Bureau, Federal Security Service 
2. A federally chartered savings bank
   - federal savings bank

Type of: Russian agency, savings bank

Encyclopedia: FSB

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• osteogenesis imperfecta
• osteogenic sarcoma
• Osteoglossidae
• Osteoglossiformes
• osteoid
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• osteoporosis
• osteosarcoma