(n.) A hydrous oxide of iron, occurring in prismatic crystals, also massive, with a fibrous, reniform, or stalactitic structure. The color varies from yellowish to blackish brown.
Example Sentences:
(1) This can be understood in terms of the microcrystalline goethite structure of the cores as indicated by electron diffraction.
(2) The thermodynamic stabilities of ferric oxyhydroxides, as described by the activity product in solution pK = -log [Fe(3+)] [OH(-)](3) range from pK = 37.1 for freshly precipitated amorphous oxyhydroxide to pK = 44.2 for well crystallized goethite.
(3) The activity profiles, were also found to vary with ionic strength, the pH at which enzyme adsorbed onto the mineral surface, and in the case of goethite, on the nature of the anions in the buffer.
(4) Opal and goethite mineralize the cusps and bases of the teeth.
(5) Different pH profiles of activity profiles were found when the enzyme was adsorbed onto montmorillonite, kaolinite and goethite.
(6) This could be linked to the presence of ferrous ions in this solid iron oxide, since the ferric oxides haematite and goethite are completely inactive.
(7) Haemosiderin iron cores isolated from patients with secondary haemochromatosis have a goethite-like (alpha-FeOOH) crystal structure whereas those from patients with primary haemochromatosis are amorphous Fe (III) oxide.
Rust
Definition:
(v. i.) To contract rust; to be or become oxidized.
(n.) 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.
(n.) 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.
(n.) That which resembles rust in appearance or effects.
(n.) A composition used in making a rust joint. See Rust joint, below.
(n.) Foul matter arising from degeneration; as, rust on salted meat.
(n.) Corrosive or injurious accretion or influence.
(v. i.) To be affected with the parasitic fungus called rust; also, to acquire a rusty appearance, as plants.
(v. i.) To degenerate in idleness; to become dull or impaired by inaction.
(v. t.) To cause to contract rust; to corrode with rust; to affect with rust of any kind.
(v. t.) To impair by time and inactivity.
Example Sentences:
(1) The reasoning in Rust v Sullivan allows government to limit freedom of speech in federally funded programs.
(2) Here, abandoned cars don’t just sit and rust, they are swallowed by the jungle.
(3) The cause, they claimed, was emissions from the mine's sulphuric acid factory as well as outflow from mountains of rust-red waste, dumped over 15 years with little concern for the environment.
(4) The bean rust fungus, Uromyces appendiculatus, undergoes thigmotropic differentiation to produce infection structures.
(5) Pain relief is more rapid after electric drill removal; this is probably related to the complete removal of the rust.
(6) And no wonder: unemployment in the Garden State is at a 35-year high of 9.8% – the fourth-worst in the nation – and unlike in the Rust Belt states or other hard-hit regions, in Jersey unemployment is still climbing .
(7) Hill, who cut an unusual touchline figure in green jacket and rust cords, preferred to praise Wednesday for the quality of their set plays rather than blast his defenders for their inability to defend them.
(8) Worse, pests like the berry borer beetle and leaf rust fungus are flourishing as the world warms.
(9) The rusted bike was found in a large white container where its owner, Ikuo Yokoyama, had kept it.
(10) Mr X invested money into buying old equipment from other abandoned coal mines – this was not difficult because abandoned mines with rusting equipment are not in short supply in North Korea today.
(11) This week a beachcomber in British Columbia found a moving crate containing a rusting Harley-Davidson motorcycle registered to Japan's Miyagi prefecture, which absorbed the brunt of the tsunami.
(12) One white lump sits beside the rusted-out remains of a bucket.
(13) In the glow of the thing's own flame they saw edificial flanks, the concrete and rust of them, the iron of the pylon barnacled, shaggy with benthic growth now lank gelatinous bunting.
(14) The Trump vote contained rednecks and inhabitants of the rust belt, just as south Wales and Sunderland turned out for Brexit – but in neither case was that the whole story.
(15) The best actress award Last year Marion Cotillard's turn in Jacques Audiard's Rust & Bone , as a waterpark trainer who loses her legs, was beaten to the best actress award by two troubled nuns in Romanian drama Beyond the Hills.
(16) Basidiomycetes, a complex and common group of fungi, which include mushrooms, rusts, smuts, brackets, and puffballs, have not been well studied.
(17) Naturally, insider accounts suggest electoral calculation : Trump reckoned that the people who put him in the White House, especially blue collar workers in the rust-belt states, have long seen global warming as a con.
(18) We cannot let that happen.” “He says he has foreign policy experience because he ran the Miss Universe pageant in Russia,” she said, adding at another point in the speech: “This isn’t reality television, this is actual reality.” Later, Clinton added: “It is not hard to see how a Trump presidency could lead to a global economic crisis.” The former secretary of state’s speech, staged in front of a wall of US flags, rebutted a foreign policy address Trump made in April in which he promised to save “humanity itself” and “shake the rust off America’s foreign policy”.
(19) Where other politicians might be accused of dog-whistle politics, Trump was broadcasting at a frequency accessible to all, exploiting the nation’s three biggest weaknesses: rust, race and ignorance.
(20) Steel surfaces can be treated with zinc and chromates to prevent the steel from rusting.