pyrolusite 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
a mineral consisting of manganese dioxide; an important source of manganese
Hypernym
mineral 1
noun
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Substance_meronym
manganese 1
noun
a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals
EnglishSubstance_holonym
manganese 1
noun
a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals
