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rust |
5 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Rust \Rust\, v. i. [imp. & p. p. {Rusted}; p. pr & vb n. {Rusting}.] [AS. rustian.] 1. To contract rust; to be or become oxidized. 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. Fig.: To degenerate in idleness; to become dull or impaired by inaction. Must I rust in Egypt? never more Appear in arms, and be the chief of Greece? --Dryden. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Rust \Rust\, n. [AS. rust; akin to D. roest, G. & Sw rost, Icel. ry[eth]; -- named from its color, and akin to E. red. [root]113. See {Red}.] 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. Note: Rust is also applied to many other minute fungi which infest vegetation, such as the species of {Ustilago}, {Uredo}, and {Lecythea}. 3. That which resembles rust in appearance or effects. Specifically: a A composition used in making a rust joint. See {Rust joint}, below. b Foul matter arising from degeneration; as rust on salted meat. c Corrosive or injurious accretion or influence. Sacred truths cleared from all rust and dross of human mixtures. --Eikon Basilike Note: Rust is used in the formation of compounds of obvious meaning; as rust-colored, rust-consumed, rust-eaten, and the like {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} (Zo["o]l.), a minute mite ({Phytopius oleivorus}) which by puncturing the rind, causes the rust-colored patches on oranges. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Rust \Rust\, v. t. 1. To cause to contract rust; to corrode with rust; to affect with rust of any kind Keep up your bright swords, for the dew will rust them --Shak. 2. Fig.: To impair by time and inactivity. --Johnson. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Ferrugo \Fer*ru"go\, n. [L., iron rust, fr ferrum iron.] A disease of plants caused by fungi, commonly called the {rust}, from its resemblance to iron rust in color. From WordNet r 1.6 [wn]: rust adj : of the color of rust [syn: {rusty}] n 1: a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture 2: a reddish-brown discoloration of leaves and stems caused by a rust fungus 3: the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water [syn: {rusting}] 4: any of various fungi causing rust disease in plants [syn: {rust fungus}] v 1: become destroyed by water or air; "The metal corroded" [syn: {corrode}] 2: cause to rust; "The acid corroded the metal" [syn: {corrode}, {eat}]
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