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Meaning of RUST

Pronunciation:  rust

WordNet Dictionary
  1. [n]  any of various fungi causing rust disease in plants
  2. [n]  the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
  3. [n]  a reddish-brown discoloration of leaves and stems caused by a rust fungus
  4. [n]  a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
  5. [adj]  of the color of rust
  6. [v]  become coated with oxide
  7. [v]  become destroyed by water, air, or an etching chemical such as an acid; "The metal corroded"; "The pipes rusted"
  8. [v]  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"

RUST is a 4 letter word that starts with R.


 Synonyms: chromatic, corrode, rust fungus, rusting, rusty
 See Also: aeciospore, aecium, apple rust, blister rust, blister rust, cedar-apple rust, corroding, corrosion, Cronartium ribicola, crumble, damage, decay, delapidate, eat away, erosion, ferric oxide, ferric oxide, flax rust, flax rust fungus, fret, fungus, goethite, gothite, Gymnosporangium juniperi-virginianae, Melampsora lini, order Uredinales, oxidation, oxidisation, oxidization, plant disease, Puccinia graminis, Uredinales, wheat rust, white pine blister rust, white-pine rust



Webster's 1913 Dictionary
  1. \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
    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
    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,
    {Rust mite} (Zo["o]l.), a minute mite ({Phytopius oleivorus})
       which, by puncturing the rind, causes the rust-colored
       patches on oranges.
  2. \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.
  3. \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.
Dream Dictionary
 Definition: Seeing rust forming on iron or tin means neglect or old age. It is also indicative of depressing surroundings, characterized by a decline in fortune and false friends.
Biology Dictionary
 Definition: A type of club fungus that is a parasite on plants. The most common rust is Puccinia graminis (black stem rust in wheat).