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passive iron. In DICTIOUS you will not only get to know all the dictionary meanings for the word
passive iron, but we will also tell you about its etymology, its characteristics and you will know how to say
passive iron in singular and plural. Everything you need to know about the word
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English
Noun
passive iron (uncountable)
- (chemistry) Iron that has been subjected to the action of heat, strong nitric acid, chlorine, etc. It is then not easily acted upon by acids.