英和和英

名詞

black oxide (countable and uncountable, plural black oxides)

1. (idiomatic) Any of several coatings for steels or copper; some are oxides (mainly iron(II,III) oxide), some are nitrites or nitrates, and some are selenides; all are black; the main purposes are the antireflective and cosmetic effects; the anticorrosion effects are small.

   Hypernyms: coating, finish; substance, material

   Coordinate terms: bluing, browning, phosphating, passivation, plating

   Near-synonym: blackening

   hot black oxide;   cold black oxide

2. Used other than figuratively or idiomatically: any oxide that is black; often, iron(II,III) oxide.

   Hypernyms: oxide < compound, substance, material

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