(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.
Stony
Definition:
(superl.) Of or pertaining to stone, consisting of, or abounding in, stone or stones; resembling stone; hard; as, a stony tower; a stony cave; stony ground; a stony crust.
(superl.) Converting into stone; petrifying; petrific.
(superl.) Inflexible; cruel; unrelenting; pitiless; obdurate; perverse; cold; morally hard; appearing as if petrified; as, a stony heart; a stony gaze.
Example Sentences:
(1) Sitting on his stony porch, Rao asserts that he is not being romantic about the benefits of agriculture: “Here we earn more than 120,000 rupees [£1,170] a year, and our cost of living is one-fifth that of a city’s.
(2) Digital examination revealed that the prostate became stony-hard and larger 10 weeks after the initial BCG immunotherapy.
(3) Freed of the need to wave their tentacles around to hunt for food, the coral can devote more energy to secreting the mineral calcium carbonate, from which they form a stony exoskeleton.
(4) Not because the arts and humanities are especially hard to legitimise, but because everything is hard to justify when your opponent is standing there with crossed arms and a stony face.
(5) If someone’s able to keep such a stony-faced expression, it’s either high theatrics or they have no sympathy,” she added.
(6) It would face the same challenges and would continue to act in much the same way, steering the country towards new elections in late 2017 or 2018 and pursuing the stony path of incremental economic reform.
(7) We evaluated five enzyme-linked immunosorbent assays from Stony Brook (NY) University Hospital, Cambridge Bioscience (Worcester, Mass), Hillcrest Biologicals (Cypress, Calif), Sigma Diagnostics (St Louis, Mo), and Zeus-Wampole Scientific Inc (Raritan, NJ) and two fluorescent antibody tests (3M [Diagnostic Systems Inc, Santa Clara, Calif] and FIAX [Whittaker M.A.
(8) Without naming and shaming, during the USA's game against Portugal, I saw one leftwing tweeter ask with plaintive, stony-faced sincerity "how can anyone be supporting the imperialists?"
(9) No one is considered universally funny: there will always be someone stony-faced and dry-eyed in a room filled with hilarity, wondering what everyone else is laughing at.
(10) To a stony-faced audience at a conference organised by Learning Without Frontiers, she said: "We should recognise and embrace some of the good things that came out of the 19th century."
(11) The villages, whose populations range from a few hundred to 2,000, are scattered on stony land criss-crossed by busy roads, electricity pylons and cables and water pipes.
(12) Watched stony-faced by the Israeli delegation led by ambassador Ron Prosor, Abbas on Wednesday called for the international community to recognise Palestine as a state under occupation in the same way that countries were occupied in the second world war.
(13) If one of the first signs of ageing is being irritated by the young, I'd transformed into the ultimate short-fused, stony-eyed Methuselah.
(14) To help meet the need for physician manpower in preventive medicine a new residency was established at the State University of New York at Stony Brook in July 1983.
(15) The Stony Brook Child Psychiatric Checklist, a parent completed rating instrument based on DSM-III-R, was used as part of a psychiatric inpatient admission evaluation.
(16) At the School of Medicine of the State University of New York at Stony Brook, the surgical clerkship became mandatory in 1976.
(17) Labour's riposte will be that the more difficult the economic news the stronger the yearning will be for a "change election" on the economy and the greater the premium on fairness in austerity – fertile terrain for Miliband, stony ground for the incumbent Cameron.
(18) The gland becomes stony hard, is not displaceable and, characteristically, the fibrous tissue penetrates the capsule and infiltrates into surrounding structures such as muscles, vessels, nerves and even the trachea.
(19) The liver was markedly enlarged and of stony consistency.
(20) The anti-Trident activists wave at the Faslane workers as they come and go; the workers remain stony-faced.