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a. Any of various powdery or scaly reddish-brown or reddish-yellow hydrated ferric oxides and hydroxides formed on iron and iron-containing materials by low-temperature oxidation in the presence of water.
b. Any of various metallic coatings, especially oxides, formed by corrosion.
c. A stain or coating resembling iron rust.
2. Deterioration, as of ability, resulting from inactivity or neglect.
3. Botany
a. Rust fungus.
b. A plant disease caused by a rust fungus, characterized by reddish or brownish spots on leaves, stems, and other parts.
4. A strong brown.
v. rust·ed, rust·ing, rusts
1. To become corroded.
2. To deteriorate or degenerate through inactivity or neglect: My golf game has rusted from all those years of not playing.
3. To become the color of rust.
4. Botany To develop a disease caused by a rust fungus.
1. To corrode or subject (a metal) to rust formation.
2. To impair or spoil, as by misuse or inactivity.
3. To color (something) a strong brown.

[Middle English, from Old English rūst; see reudh- in Indo-European roots.]

rust adj.
rust′a·ble adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rusting - the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
corroding, corrosion, erosion - erosion by chemical action
oxidation, oxidisation, oxidization - the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction
ferric oxide - a red oxide of iron
References in classic literature ?
I remember a long gallery of rusting stands of arms, and how I hesitated between my crowbar and a hatchet or a sword.
Get rid of the source of the rust or paint the bit of metal that is rusting.
V-11211,V-11212, V-11218, V-11227, V-11262, V-11288, V-11296, V-11304, V-11308, V-11319, V-11338, V-11353, V-11365 and V-11396 are the most prominent lines because these lines showed the combination of all three slow rusting genes as well as high yield potential.
In order to combine genes for enhancing rust resistance and high yield potential in wheat, parent lines were selected for hybridization on the basis of slow rusting history and phenotypic characters for durable resistance.
Then I go to six hours of rusting until I get the color I desire (it only takes one or two more passes).
The ship's metal is quickly corroding, or rusting, in the salty seawater.
The company had previously used paper and banding to cover the steel and secure it to pallets, but the methods did not work to protect the steel from condensation and prevent rusting.
A three year- old car should not be rusting beneath its paint, so it's clearly a manufacturing defect.