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1. A ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group
   - gadolinium, atomic number 64

1. A nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled
   - soman

Type of: metal, metallic element, organophosphate nerve agent

Part of: gadolinite, samarskite, ytterbite

Encyclopedia: GD