black oxide
Any of several coatings for steels or copperAny 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.
Meaning
2 senses(countable, idiomatic, uncountable)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.
Near-synonym: blackening
hot black oxide
(countable, uncountable)Used other than figuratively or idiomatically: any oxide that is black; often, iron(II,III) oxide.
Forms
plural: black oxides| Singular | black oxide |
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| Plural | black oxides |
regular
Synonyms
1 synonymsWord family
1 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable