GD n 1: a nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled [syn: {soman}, {GD}] 2: a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group [syn: {gadolinium}, {Gd}, {atomic number 64}]
gd <networking> The {country code} for Grenada. (1999-01-27)