iron group
/AY1 ER0 N G R UW0 P/noun
- 1
A smaller subset thereof comprising iron, cobalt, and nickel.
- 2
(inorganic chemistry) Group 8 of the periodic table, comprising iron, ruthenium, osmium, and hassium.
- 3
Row 4 (period 4) of the periodic table, or a large subset thereof.
- 4
Any of several groupings of elements that share traits with iron in one way or another.
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