1. The internal counterintelligence agency of the Russian Federation and successor to the Soviet KGB; formerly led by Vladimir Putin
   - FSB, Federal Security Service

Type of: Russian agency

• Admiral Dewey
• Admiral Nelson
• Admiral Nimitz
• ACE inhibitor
• ace of clubs
• ace of diamonds
• ace of hearts
• ace of spades
• acebutolol
• acedia
• acellular
• acellular slime mold
• acellular slime mould
• acentric
• acentric chromosome
• acephalia
• acephalism
• acephalous
• acephaly
• Acer
• Acer argutum
• Acer campestre
• Acer circinatum
• Acer glabrum
• Acer japonicum