Jisho

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Noun
1. rust
Wikipedia definition
2. RustRust is a general term for describing iron oxides. In colloquial usage, the term is applied to red oxides, formed by the reaction of iron and oxygen in the presence of water or air moisture. There are also other forms of rust, such as the result of the reaction of iron and chloride in an environment deprived of oxygen, such as rebar used in underwater concrete pillars, which generates green rust.
Read “Rust” on English Wikipedia
Read “錆” on Japanese Wikipedia
Read “Rust” on DBpedia
Other forms
錆び 【さび】銹 【さび】鏽 【さび】
Notes
銹: Rarely-used kanji form. 鏽: Rarely-used kanji form.

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