gd
English Thesaurus
1. a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group (noun.substance)
| hypernym | : | metal, metallic element, |
| definition | : | any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. (noun.substance) |
| substance meronym | : | gadolinite, ytterbite, |
| definition | : | a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium (noun.substance) |
| substance meronym | : | samarskite, |
| definition | : | a complex black mineral occurring in pegmatites (noun.substance) |
2. a nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled (noun.substance)
| hypernym | : | organophosphate nerve agent, |
| definition | : | any of a series of nerve agents containing organophosphate compounds first synthesized by German chemists in 1936; in World War II the Germans tested them in concentration camps but not on the battlefield; Iraq is alleged to have used them against Iran and against the Kurds (noun.substance) |
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