(n.) The most common and most useful metallic element, being of almost universal occurrence, usually in the form of an oxide (as hematite, magnetite, etc.), or a hydrous oxide (as limonite, turgite, etc.). It is reduced on an enormous scale in three principal forms; viz., cast iron, steel, and wrought iron. Iron usually appears dark brown, from oxidation or impurity, but when pure, or on a fresh surface, is a gray or white metal. It is easily oxidized (rusted) by moisture, and is attacked by many corrosive agents. Symbol Fe (Latin Ferrum). Atomic weight 55.9. Specific gravity, pure iron, 7.86; cast iron, 7.1. In magnetic properties, it is superior to all other substances.
(n.) An instrument or utensil made of iron; -- chiefly in composition; as, a flatiron, a smoothing iron, etc.
(n.) Fetters; chains; handcuffs; manacles.
(n.) Strength; power; firmness; inflexibility; as, to rule with a rod of iron.
(n.) Of, or made of iron; consisting of iron; as, an iron bar, dust.
(n.) Resembling iron in color; as, iron blackness.
(n.) Like iron in hardness, strength, impenetrability, power of endurance, insensibility, etc.;
(n.) Rude; hard; harsh; severe.
(n.) Firm; robust; enduring; as, an iron constitution.
(n.) Inflexible; unrelenting; as, an iron will.
(n.) Not to be broken; holding or binding fast; tenacious.
(v. t.) To smooth with an instrument of iron; especially, to smooth, as cloth, with a heated flatiron; -- sometimes used with out.
(v. t.) To shackle with irons; to fetter or handcuff.
(v. t.) To furnish or arm with iron; as, to iron a wagon.
Example Sentences:
(1) The hypothesis that proteins are critical targets in free radical mediated cytolysis was tested using U937 mononuclear phagocytes as targets and iron together with hydrogen peroxide to generate radicals.
(2) The most successful dyes were phenocyanin TC, gallein, fluorone black, alizarin cyanin BB and alizarin blue S. Celestin blue B with an iron mordant is quite successful if properly handled to prevent gelling of solutions.
(3) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(4) The specific activities of extracts from cells grown under phototrophic and aerobic conditions were similar and not affected by the concentration of iron in the growth media.
(5) In the 153 women to whom iron supplements were given during pregnancy, the initial fall in haemoglobin concentration was less, was arrested by 28 weeks gestation and then rose to a level equivalent to the booking level.
(6) Typically the iron-iron axis (gz) of the binuclear iron-sulfur clusters is in the membrane plane.
(7) Increased iron levels in basal ganglia were generally associated with normal or elevated levels of ferritin immunoreactivity, for example, the substantia nigra in PSP and possibly MSA, and in putamen in MSA.
(8) Lead levels in contents and shells of eggs laid by hens dosed with all-lead shot were about twice those in eggs laid by hens dosed with lead-iron shot.
(9) Dietary factors affect intestinal P450s markedly--iron restriction rapidly decreased intestinal P450 to beneath detectable values; selenium deficiency acted similarly but was less effective; Brussels sprouts increased intestinal AHH activity 9.8-fold, ECOD activity 3.2-fold, and P450 1.9-fold; fried meat and dietary fat significantly increased intestinal EROD activity; a vitamin A-deficient diet increased, and a vitamin A-rich diet decreased intestinal P450 activities; and excess cholesterol in the diet increased intestinal P450 activity.
(10) Since iron from fortified formulas is well absorbed during the first three months of life, even if it is not immediately used for hemoglobin formation, an inccrease in the iron stores will occur...
(11) Dietary intakes, measured by three 24-hour recalls, revealed that protein, iron and Vitamin C generally met or exceeded the Nutrition Recommendations for age.
(12) This is a struggle for the survival of our nation.” As ever, after Trump’s media dressing-down, his operation was quick to fit a velvet glove to an iron fist.
(13) Ten weeks of iron therapy was not, however, long enough to increase iron stores.
(14) With both approaches, carbohydrate and fat had little influence whereas egg albumin had a significant inhibitory effect on the absorption of nonheme iron.
(15) The protein quality and iron bioavailability of mechanically deboned turkey meat (MDT) and hand-deboned turkey meat (HDT) were determined in rats.
(16) Serum levels of vitamins A and E, zinc and iron were determined in healthy control subjects and lepromatous leprosy patients belonging to an eastern state of India.
(17) Ferric iron in aqueous solution was used as an iron-only control.
(18) The implications of inhibition of protein kinase C by adriamycin-iron(III) are discussed.
(19) The duodenal mucosa of genotypically normal iron replete and iron deficient mice and mice with sex-linked (sla) and microcytic anemias (mk) was examined for the presence of iron-binding proteins.
(20) Ferredoxin reductase (Fd-reductase) supplies reducing equivalents obtained from NADPH to mitochondrial cytochrome P450 enzymes via the small iron-sulfur protein ferredoxin.
Steel
Definition:
(n.) A variety of iron intermediate in composition and properties between wrought iron and cast iron (containing between one half of one per cent and one and a half per cent of carbon), and consisting of an alloy of iron with an iron carbide. Steel, unlike wrought iron, can be tempered, and retains magnetism. Its malleability decreases, and fusibility increases, with an increase in carbon.
(n.) An instrument or implement made of steel
(n.) A weapon, as a sword, dagger, etc.
(n.) An instrument of steel (usually a round rod) for sharpening knives.
(n.) A piece of steel for striking sparks from flint.
(n.) Fig.: Anything of extreme hardness; that which is characterized by sternness or rigor.
(n.) A chalybeate medicine.
(n.) To overlay, point, or edge with steel; as, to steel a razor; to steel an ax.
(n.) To make hard or strong; hence, to make insensible or obdurate.
(n.) Fig.: To cause to resemble steel, as in smoothness, polish, or other qualities.
(n.) To cover, as an electrotype plate, with a thin layer of iron by electrolysis. The iron thus deposited is very hard, like steel.
Example Sentences:
(1) It was found that there is a significant difference in bond strengths between enamel and stainless steel with strength to enamel the greater.
(2) By the 1860s, French designs were using larger front wheels and steel frames, which although lighter were more rigid, leading to its nickname of “boneshaker”.
(3) Utilization of inert materials like teflon, makrolon, and stainless steel warrants experimental and possibly clinical application of the developed small constrictor.
(4) The strongest field distortions and attractive forces occurred with 17-7PH stainless steel clips.
(5) A case of a failed total hip replacement consisting of a Vitallium hip socket and a stainless steel femoral head prosthesis is presented.
(6) Tata Steel, the owner of Britain’s largest steel works in Port Talbot, is in talks with the government about a similar restructuring for the British Steel pension scheme , which has liabilities of £15bn.
(7) The strong magnetic field of the super-conducting MRI (Magnetic Resonance Imaging) apparatus could cause problems in the presence of metallic foreign material, such as the metal clips and loops of intraocular lenses and steel as suturing material.
(8) Superman fans are up in arms at the decision of the publisher to appoint a noted anti-gay writer to pen the Man of Steel's latest adventures.
(9) It is not same to the stainless steel wire of traditional removable appliances which must be activated every time to produce a little tooth movement.
(10) Demolition of a steel railway bridge was carried out by nine workers using flame-torch cutting.
(11) The stainless steel 316 mesh tray with cancellous bone offers a method of mandibular reconstruction which theoretically is appealing from the viewpoint of basic osseous healing.
(12) Glycaemia, glucosuria, plasma insulin, and the rates of appearance Ra and disappearance Rd of glucose (kinetics of double-labelled glucose, evaluated according to Steele's equation in its non-steady-state version) were observed under the following conditions, starting from normoglycaemia during glucose-controlled insulin infusion (GCII): (I) insulin withdrawal, (II) insulin withdrawal and glucose infusion, (III) constant i.v.
(13) Forty-five percutaneous trephine lung biopsies using the Steel apparatus were performed on 38 patients.
(14) It remains an open question whether the syndrom of Richardson-Steele-Olszewski is a syndrome of its own or whether it is just a variety of parkinsonism.
(15) Three female actors, including former Bond girl Olga Kurylenko , are rumoured to be in the running for the lead female role in the upcoming sequel to superhero reboot Man of Steel, reports Variety .
(16) A removable, stainless-steel tube is present around the heated area, and this particular configuration makes it possible to begin every combustion procedure from room temperature, and consequently, to achieve a complete evacuation of air from the line even for heat-labile samples.
(17) Since the heart of the MRI is a large magnet, certain metals such as stainless steel can cause artifacts in the images.
(18) But over the Christmas period the Cahuzac story has continued to dominate headlines as some newspapers suggested Hollande might have a cabinet reshuffle both to detract from the Mediapart allegations and to draw a line under government disagreements over the handling of France's crisis-hit steel industry.
(19) Bipolar stainless steel wire electrodes were placed unilaterally into the costal and crural portions of the diaphragm and into the parasternal intercostal muscle in the second or third intercostal space.
(20) The recovery of haemopoiesis in Steel mutant mice following 1 Gy sublethal irradiation is described.