HyperDic: atomic_number_77

English > 1 sense of the expression atomic number 77:
NOUNsubstanceatomic number 77, iridium, Ira heavy brittle / brittle metallic element of the platinum group
English > atomic number 77: 1 sense > noun 1, substance
MeaningA heavy brittle / brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium.
Synonymsiridium, Ir
Broadermetallic element, metalAny of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Spanishiridio, número atómico 77
Catalaniridi, Ir, número atòmic 77

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