Word:

Rust

n.1.(Chem.) The reddish yellow coating formed on iron when exposed to moist air, consisting of ferric oxide or hydroxide; hence, by extension, any metallic film of corrosion.
2.(Bot.) A minute mold or fungus forming reddish or rusty spots on the leaves and stems of cereal and other grasses (Trichobasis Rubigo-vera), now usually believed to be a form or condition of the corn mildew (Puccinia graminis). As rust, it has solitary reddish spores; as corn mildew, the spores are double and blackish.
3.That which resembles rust in appearance or effects.
Sacred truths cleared from all rust and dross of human mixtures.
- Eikon Basilike.
Rust joint
a joint made between surfaces of iron by filling the space between them with a wet mixture of cast-iron borings, sal ammoniac, and sulphur, which by oxidation becomes hard, and impervious to steam, water, etc.
Rust mite
(Zool.) a minute mite (Phytopius oleivorus) which, by puncturing the rind, causes the rust-colored patches on oranges.
v. i.1.To contract rust; to be or become oxidized.
[imp. & p. p. Rusted; p. pr. & vb. n. Rusting.]
If gold ruste, what shall iron do?
- Chaucer.
Our armors now may rust.
- Dryden.
2.To be affected with the parasitic fungus called rust; also, to acquire a rusty appearance, as plants.
3.To degenerate in idleness; to become dull or impaired by inaction.
v. t.1.To cause to contract rust; to corrode with rust; to affect with rust of any kind.
2.To impair by time and inactivity.
Noun1.rust - a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
2.rust - a reddish-brown discoloration of leaves and stems caused by a rust fungus
3.rust - the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
Synonyms: rusting
4.Rustrust - any of various fungi causing rust disease in plants
Synonyms: rust fungus
Verb1.rust - become destroyed by water, air, or an etching chemical such as an acid; "The metal corroded"; "The pipes rusted"
Synonyms: corrode
2.rust - cause to deteriorate due to the action of water, air, or an acid; "The acid corroded the metal"; "The steady dripping of water rusted the metal stopper in the sink"
Synonyms: corrode, eat
3.rust - become coated with oxide
Adj.1.rust - of the color of rust
Synonyms: rusty
To see rust forming on iron or tin, signifies neglect or old age. It is also indicative of depressing surroundings, characterized by a decline in fortune and false friends.Titian, Titian-red, adust, age, algae, antiquate, auburn, autophyte, bay, bay-colored, bayard, bean, become extinct, become obsolete, biodegradability, biodegradation, blast, blight, bracken, brazen, breakup, bricky, bronze, bronze-colored, bronzed, brown, brown algae, brownish-red, burn, cancer, canker, cardinal, carmine, carnation, carnelian, castaneous, cerise, cherry, cherry-colored, cherry-red, chestnut, chestnut-brown, climber, conferva, confervoid, copper, copper-colored, coppery, corrode, corrosion, corruption, creeper, crimson, cupreous, damask, date, decay, decomposition, degradability, degradation, diatom, dilapidation, disintegration, disorganization, dissolution, dry rot, eat, eat away, eat into, embrown, erode, fade, fern, ferruginous, fiery, fire-red, flame-colored, flame-red, flaming, fossilize, foxy, fruits and vegetables, fucus, fungus, fust, glowing, gnaw, grapevine, green algae, grow old, gules, gulfweed, henna, herb, heterophyte, hot, incarmined, incarnadine, inflame, inflamed, infrared, infuscate, iron-red, ivy, kelp, lake-colored, laky, lateritious, legume, lentil, liana, lichen, lipstick, liver-brown, liver-colored, liverwort, livid-brown, lobster-red, lose currency, lurid, madder, mahogany, maroon, mildew, miniate, mold, molder, moss, moth, moth and rust, mushroom, must, nibble away, obsolesce, outdate, oxidation, oxidization, oxidize, parasite, parasitic plant, pea, perish, perthophyte, pest, phytoplankton, planktonic algae, plant families, port-wine, puce, puffball, pulse, red, red algae, red-dyed, red-ink, red-looking, redden, reddened, reddish, reddish-amber, reddish-brown, resolution, roan, rockweed, rot, rouge, rubicund, rubify, rubiginous, rubric, rubricose, ruby, ruby-colored, ruby-red, ruddied, ruddle, ruddy, rufescent, rufous, russet, russety, rust-colored, rust-red, rusty, saprophyte, sargasso, sargassum, scarlet, sea lentil, sea moss, sea wrack, seaweed, smut, spoilage, stammel, succulent, sunburn, sunburned, suntan, superannuate, tan, terra-cotta, tile-red, toadstool, vermilion, vetch, vinaceous, vine, warm, wine, wine-colored, wine-red, worm, wort, wrack
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