delta iron

Noun
  1. An allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees) (synset 114746587)
    is a type of: atomic number 26, fe, iron - a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood

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