Source etymology 1
Original entry ↗The deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide). · A similar substance based on another metal. · A reddish-brown color. · A disease of plants caused by a reddish-brown fungus (Pucciniales).
From Middle English rust, rost, roust, from Old English rust, rūst (“rust”), from Proto-West Germanic *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”), Finnish ruoste, Estonian rooste. Related to red.
Relationships mentioned by the source
These are extracted mentions, not a timeline or a verified sequence of immediate parents.
- Root classification mention*h₁rewdʰ-ine-pro
- Inherited-form mentionrustenm
- Inherited-form mentionrustang
- Inherited-form mention*rustgmw-pro
- Inherited-form mention*rustazgem-pro
- Derivation mention*rudʰso-ine-pro
- Derivation mention*h₁rewdʰ-ine-pro
- Cognate mentionroustsco
- Cognate mentionruststq
- Cognate mentionroastfy
- Cognate mentionroestnl
- Cognate mentionRostde
- Cognate mentionrustda
- Cognate mentionrostsv
- Cognate mentionrustno
- Cognate mentionruostefi
- Cognate mentionroosteet
This page abbreviates 1 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.
Inspect preserved source fields
Raw extraction fields are retained for auditing. Their order does not establish ancestry.
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"expansion": "Estonian rooste"
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"The deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide).",
"A similar substance based on another metal.",
"A reddish-brown color.",
"A disease of plants caused by a reddish-brown fungus (Pucciniales)."
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