(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.
Ironclad
Definition:
(a.) Clad in iron; protected or covered with iron, as a vessel for naval warfare.
(a.) Rigorous; severe; exacting; as, an ironclad oath or pledge.
(n.) A naval vessel having the parts above water covered and protected by iron or steel usually in large plates closely joined and made sufficiently thick and strong to resist heavy shot.
Example Sentences:
(1) All the beliefs, opinions and doubts I hold are just that: they are ideas, not ironclad convictions.
(2) That's not to say this rule is ironclad, by any means, but Rick Perry, Rick Santorum, and most importantly, Paul Ryan are all in better position per this criterion.
(3) If governments are not to become dependent on “insider” corporations, with the exclusion of other voices, overpricing and grotesque corruption risks that entails, then the ironclad regulation of lobbying and the re-establishment of disinterested civil and public service capacity should now be on every democrat’s agenda.
(4) The US maintained an “ironclad commitment” to the defence of South Korea , he added.
(5) In an effort to shore up the banks’ balance sheet, regular bank customers were sold investments that they wrongly believed were ironclad.
(6) The culture secretary, Maria Miller, has embarked on a year-long battle to persuade her party to embrace same-sex marriage, promising to secure ironclad guarantees that no religious groups would be required to conduct such ceremonies against their will.
(7) As US attorney for the eastern district of New York, Lynch built an ironclad reputation for steadily guiding the most complicated criminal prosecutions – from terrorism cases to sex trafficking to government corruption – toward conviction.
(8) This must be an ironclad agreement so that no commonwealth government can refuse to meet its obligations to health and education.” Foley also unveiled a plan for thousands of existing public housing dwellings to be transferred to the not-for-profit community housing sector, saying this was one area where non-government bodies were better placed to succeed.
(9) A spokesman for Netanyahu claimed to have “ironclad evidence” that the Obama administration had plotted behind the scenes to promote the UN resolution.
(10) Obama’s prohibition on ground forces in a combat role was less ironclad than the president has publicly stated, Dempsey suggested.
(11) The administration insists its opposition to Assad remains ironclad.
(12) She told reporters: “We are looking for an action-focused, results-oriented approach, and we are going to be trying to cooperate with other partners and allies in a global coalition really to try to solve this problem in an urgent way that we haven’t really taken up before.” Thornton said Washington’s commitment to the defence of South Korea and Japan was “ironclad”, adding: “We will do whatever is necessary to ensure that we’re going to maintain security in that region and that we’re going to be very serious about pursuing a solution to the illegal North Korean weapons programmes.” But Kurt Campbell, who served as the US’s senior diplomat dealing with Asia during Barack Obama’s first term as president, warned that Trump’s rhetoric lacked credibility.
(13) A lethal confusion, I suspect, created by one man with the ironclad confidence of a Lord Reith, a cocky newcomer who inherits what he suspects is a shambles, and a politician close to panic at the thought she might be the next to go.
(14) Opposition groups are likely to see the high-profile flight from Syria as a propaganda coup and evidence that ironclad allegiances in sensitive parts of the police state are starting to crumble.
(15) All this adds up to a salutary reminder that Miliband still has a mountain to climb in translating Labour's consistent but not massive opinion poll lead into something more ironclad and irresistible as 2015 nears.
(16) Trump, who has said his criticism was directed against US policymakers, not the Mexican people or its government, stated on Thursday that Univision would be defaulting on an ironclad contract if it doesn’t air the pageants.
(17) The fraudulence of the Copenhagen approach – "goals" for emission reductions, "offsets" that render ironclad goals almost meaningless, the ineffectual "cap-and-trade" mechanism – must be exposed.
(18) This "ironclad" system – operating outside statute, "but independent beyond a shadow of doubt" – could also appoint the first chairman, Letwin said.
(19) Donald Trump and Rupert Murdoch: inside the billionaire bromance Read more At his Senate hearing last month, Hagerty, a key member of Trump’s transition team, stressed Washington’s “ironclad” commitment to its alliance with Japan, calling it “the cornerstone of regional peace and security” and “a platform for global cooperation”.
(20) Morrison returned from Port Moresby this week with no ironclad guarantee that the 1,300 detained on Manus would ever be allowed to settle in PNG.