rust
English

Rust

Rust on a can
Etymology
From Middle English rust, rost, roust, from Old English rust, rūst (“rust”), from Proto-Germanic *rustaz (“rust”), from Proto-Indo-European *rudʰso- (“red”), from Proto-Indo-European *h₁rewdʰ- (“red”). Cognate with Scots roust (“rust”), Saterland Frisian rust (“rust”), West Frisian roast (“rust”), Dutch roest (“rust”), German Rost (“rust”), Danish rust (“rust”), Swedish rost (“rust”), Norwegian rust, ryst (“rust”). Related to red.
Pronunciation
- enPR: rŭst, IPA(key): /ɹʌst/
Audio (US) (file) - Rhymes: -ʌst
Noun
rust (countable and uncountable, plural rusts)
- The deteriorated state of iron or steel as a result of moisture and oxidation.
- The rust on my bicycle chain made cycling to work very dangerous.
- A similar substance based on another metal (usually with qualification, such as "copper rust").
- aerugo. Green or blue-green copper rust; verdigris. (American Heritage Dictionary, 1973)
- A reddish-brown color.
- rust colour:
- A disease of plants caused by a reddish-brown fungus.
Derived terms
terms derived from rust
- cedar-apple rust
- coffee rust
- Rust Belt
- wheat rust
- white pine blister rust
- white rust
Translations
result of oxidation
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colour
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Verb
rust (third-person singular simple present rusts, present participle rusting, simple past and past participle rusted)
- (intransitive) To oxidize, especially of iron or steel.
- The patio furniture had rusted in the wind-driven spray.
- (transitive) To cause to oxidize.
- The wind-driven spray had thoroughly rusted the patio furniture.
- (intransitive) To be affected with the parasitic fungus called rust.
- (transitive, intransitive, figuratively) To (cause to) degenerate in idleness; to make or become dull or impaired by inaction.
- Dryden
- Must I rust in Egypt? never more / Appear in arms, and be the chief of Greece?
- Dryden
Translations
to oxidise
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to cause to oxidise
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See also
Dutch
Pronunciation
- IPA(key): /rʏst/
Audio (file) - Rhymes: -ʏst
Etymology 1
From Middle Dutch ruste, from Old Dutch *rusta, from Proto-Germanic *rustijō.
Noun
rust f or m (plural rusten)
Etymology 2
See the etymology of the main entry.
Verb
rust
- first-, second- and third-person singular present indicative of rusten
- imperative of rusten
Norwegian Nynorsk
Pronunciation
- IPA(key): /rʉst/
Pronunciation
- IPA(key): /rʉːst/
References
- “rust” in The Nynorsk Dictionary.
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