Word Finder - rust

definition

The deteriorated state of iron or steel as a result of moisture and oxidation.

example

The rust on my bicycle chain made cycling to work very dangerous.

definition

A similar substance based on another metal (usually with qualification, such as "copper rust").

example

aerugo. Green or blue-green copper rust; verdigris. (American Heritage Dictionary, 1973)

definition

A reddish-brown color.

definition

A disease of plants caused by a reddish-brown fungus.

definition

Damage caused to stamps and album pages by a fungal infection.

Iron rust sometimes contains magnetite.

Copper rust has the same composition as malachite; it results from the action of carbon dioxide and water on the metal.

As if on cue, an old car with more rust than clear metal chugged to a stop at the dollar store.

If the rust so covered up has not begun to pit the iron the chances are that it will do no harm; but, if it is already well developed and of some thickness, it will have enough oxidizing agents in its pores to develop more oxide, and to swell up and crack the paint.

Exposed to atmospheric influences it is more or less rapidly corroded, giving the familiar rust.

Rust alone is said to cause an annual loss of wheat in India amounting to from 4,000,000 to 20,000,000 rupees.

In Australia, for instance, the berberry is an imported plant and of rare occurrence, yet rust is very abundant.

He got talking about cars to the mechanic who was hard at work on a real old banger - it had rust everywhere.

Plants can harbor a stage of white pine blister rust, so they should not be grown in the vicinity of pine trees.

The materials mixed with the iron borings cause them to rust into a solid mass, and in doing so a slight expansion takes place.

Suitable proportions of materials to form a rust joint are 90 parts by weight of iron borings well mixed with 2 parts of flowers of sulphur, and I part of powdered sal-ammoniac. Another joint, less rigid but sound and durable, is made with yarn and white and red lead.

White or grey spots may be due to Peronospora, Erysiphe, Cystopus, Entyloma and other Fungi, the mycelium of which will be detected in the discoloured area; or they may be scale insects, or the results of punctures by Red-spider, &c. Yellow spots, and especially bright orange spots, commonly indicate Rust Fungi or other Uredineae; but Phyllosticta, Exoascus, Clasterosporium, Synchytrium, &c., also induce similar symptoms. Certain Aphides, Red-spider, Phylloxera and other insects also betray their presence by such spots.

For instance, the difference between the long-stalked and finely-cut leaves of Anemone attacked with rust and the normal leaves with broad segments, or between the urceolate leaves occasionally found on cabbages and the ordinary formin these cases undoubtedly pathological and teratological respectivelyis nothing like so great as between the upper and lower normalleaves of many Umhelliferae or the submerged and floating leaves of an aquatic Ranunculus or Cabomba.

The first biographer of Jeremy Taylor was his friend and successor, George Rust, who preached a funeral sermon (in 1668) which remains a valuable document.

The absence of iron and the abundance of bronze in the relics of a prehistoric people is a piece of evidence to be accepted with caution, because the great defect of iron, its proneness to rust, would often lead to its complete disappearance, or conversion into an unrecognizable mass, even though tools of bronze originally laid down beside it might remain but little corroded.

Steel plates and shapes, when delivered from the rolls which form them to the cooling beds, are largely covered with scales, which, adhering only partially to the surface, offer the intervening cracks or joints as vulnerable points for rust.

The first requirement, therefore, for efficient painting is the careful removal of all mill-scale, rust, grease, or foreign substance, before even the priming coat is applied.

The city has parks, including Hoyt Park (27 acres), used for athletic sports, Rust Park (150 acres), occupying an island in the river, and Riverside Park, a pleasure resort.

Ferric oxide or iron sesquioxide, Fe203, constitutes the valuable ores red haematite and specular iron; the minerals brown haematite or limonite, and gothite and also iron rust are hydrated forms. It is obtained as a steel-grey crystalline powder by igniting the oxide or any ferric salt containing a volatile acid.

The result is that new machinery is bought in very large quantities, used until it is worn out or cannot be repaired without considerable work, and then left in the fields to rust.

Of these the rust, smut and bunt fungi are by far the most common and the most destructive.

In spring, while the wheat plants are still green and immature, the rust makes its appearance as orange-red spots or streaks on the stalks and leaves.

Rust disease does not directly affect the grains, but both quantity and quality are impaired by the exhausted condition of the wheat plants.

Formerly the process was regarded as oxidation pure and simple, and, although it was known that iron did not rust in dry air, yet no attempt was made to explain why water was necessary to the action.

Moody has since shown that when all traces of carbon dioxide are removed (which is a matter of great experimental difficulty) iron may be left in contact with oxygen and water for long periods without rust appearing, but on' the admission of carbon dioxide specks are rapidly formed.

It also appears that rust changes in composition on exposure to the atmosphere, both the ferrous oxide and carbonate being in part oxidized to ferric oxide.

Any showing signs of yellow blotches must be examined for rust.

Two species of rust fungus occur on juniper, and these induce galls to form on the stems and twigs.

Brown rust of barley Brown rust of barley Brown rust was the most severe disease of barley in 1990.

Yellow rust of wheat Yellow rust of wheat Yellow rust was widespread in 2000 for the fourth consecutive year.

I seem to have leaf rust on my Rhododendron.

His studies of the life cycle of the rust fungus convinced him that the germinating spores represented a vulnerable stage for attack.

When the foliage dries more quickly, infections are reduced since, like almost all fungal spores, rust spores require water for germination.

It will also destroy fungi spores giving freedom from rust.

All that remains is to remove the rust stains made by the original galvanized pole from the GRP of the deck!

Are they blood stains, or mud stains, or rust stains, or fruit stains, or what are they?

Brown Rust of Barley The number of isolates carrying virulence to cv.

Iron, when exposed to moisture and air, "rusts"; but this process never takes place in the absence of air, and it is questionable whether it ever sets in in the absence of carbonic acid (see Rust).

Incidents in it were his vehement opposition to the Mexican War as a scheme for more slavery territory, the assault made upon him in Washington by Congressman Albert Rust of Arkansas in 1856, an indictment in Virginia in the same year for circulating incendiary documents, perpetual denunciation of him in Southern newspapers and speeches, and the hostility of the Abolitionists, who regarded his course as too conservative.

In 1953, he developed a method to make strains of wheat highly resistant to a single form of rust.

The severity of the disease attack had notably increased by mid-August when many plants were covered with rust pustules (uredinia).

Yellow rust of barley No samples were received in 1997.

Brown rust of barley The high incidence of barley brown rust in 1989 was reflected in the large number of leaf samples received.

You could end up with a bargain or a complete rust bucket.

You can also use the holes to inject inside the sections with a quality rust inhibitor.

The reinforcement D plate behind the light cluster is just starting to rust through.

Brown rust of barley Brown rust was the most severe disease of barley in 1990.

Yellow rust of wheat Yellow rust was widespread in 2000 for the fourth consecutive year.

Soybean rust is a new disease, increasingly affecting soybeans in South America, requiring increased fungicide applications.

Crown rust of oats Crown rust was more widespread than in recent years.