(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.
Twist
Definition:
(v. t.) To contort; to writhe; to complicate; to crook spirally; to convolve.
(v. t.) Hence, to turn from the true form or meaning; to pervert; as, to twist a passage cited from an author.
(v. t.) To distort, as a solid body, by turning one part relatively to another about an axis passing through both; to subject to torsion; as, to twist a shaft.
(v. t.) To wreathe; to wind; to encircle; to unite by intertexture of parts.
(v. t.) To wind into; to insinuate; -- used reflexively; as, avarice twists itself into all human concerns.
(v. t.) To unite by winding one thread, strand, or other flexible substance, round another; to form by convolution, or winding separate things round each other; as, to twist yarn or thread.
(v. t.) Hence, to form as if by winding one part around another; to wreathe; to make up.
(v. t.) To form into a thread from many fine filaments; as, to twist wool or cotton.
(v. i.) To be contorted; to writhe; to be distorted by torsion; to be united by winding round each other; to be or become twisted; as, some strands will twist more easily than others.
(v. i.) To follow a helical or spiral course; to be in the form of a helix.
(n.) The act of twisting; a contortion; a flexure; a convolution; a bending.
(n.) The form given in twisting.
(n.) That which is formed by twisting, convoluting, or uniting parts.
(n.) A cord, thread, or anything flexible, formed by winding strands or separate things round each other.
(n.) A kind of closely twisted, strong sewing silk, used by tailors, saddlers, and the like.
(n.) A kind of cotton yarn, of several varieties.
(n.) A roll of twisted dough, baked.
(n.) A little twisted roll of tobacco.
(n.) One of the threads of a warp, -- usually more tightly twisted than the filling.
(n.) A material for gun barrels, consisting of iron and steel twisted and welded together; as, Damascus twist.
(n.) The spiral course of the rifling of a gun barrel or a cannon.
(n.) A beverage made of brandy and gin.
(v. t.) A twig.
Example Sentences:
(1) Aberrant forms (elongated and twisted) in the vacuole and double virions in the plasma membrane were observed as early as 65 h after infection.
(2) Electron microscopy shows that at neutral pH, CEA particles consist of homogeneous, morphologically distinctive, twisted rod-shaped particles, about 9 X 40 nm.
(3) Rapid swelling of the knee following a blow or twisting injury is considered a significant injury.
(4) Intermolecular contacts occur in both oligomers in the minor groove: in the B form through twisted guanine-guanine hydrogen bonding, and in the Z form through base-base stacking and the water network.
(5) Ings twisted the knee during his first training session with Klopp in charge and tests have shown the former Burnley forward ruptured an anterior cruciate ligament, meaning that a player who has just broken into England’s senior team will be out for a minimum of six months.
(6) Leicester looked a little sorry for themselves and, with their concentration down, United twisted the knife.
(7) Gowher Rizvi, chief representative of the prime minister, Sheik Hasina, told the Guardian that preparations for the forthcoming elections, were "completely on track" and that the tribunal, probing crimes committed during the 1971 war in which Bangladesh broke away from Pakistan, was about bringing justice previously denied by "the twists and turns" of the country's history.
(8) The base orientations are characterized by a substantial inclination and propellor twist.
(9) Among the non-standard postures examined were: twisting while lifting or lowering, lifting and lowering from lying, sitting, kneeling, and squatting positions, and carrying loads under conditions of constricted ceiling heights.
(10) A vicious feud playing out within Uzbekistan's ruling family took a new twist on Monday , when prosecutors announced that the clan's most flamboyant member faces charges of involvement in mafia-style corruption.
(11) The possible arrangements of molecules within the twisted ribbons have been deduced and are found to be fairly closely related.
(12) Idiopathic torsion dystonia (ITD) is characterized by sustained, involuntary muscle contractions, frequently causing twisting and repetitive movements or abnormal postures.
(13) These results indicate that the polypeptide chain, driven by energetics (nonbonded and electrostatic interactions), is folded into a typical left-handed twisted four-helix bundle with an approximately 4-fold symmetric array, as observed in most four alpha-helix proteins.
(14) In the mutants twist and snail, which fail to differentiate the ventrally derived mesoderm, mitoses specific to the mesoderm are absent.
(15) Fulham were helped by United being forced into a trio of substitutions at the interval, as Rafael succumbed to a twisted ankle, Cleverly had double vision and Evans had back trouble.
(16) Blockage of the balloon system was possibly caused by twisting the system to reach and pass the lesion in the branch of left circumflex coronary artery.
(17) In the tradition of the American author Patricia Highsmith, creator of the charming psychopath Tom Ripley, Rendell used twisting plots to expose twisted minds.
(18) From previous genetic and biochemical studies it was hypothesized that dorsal might be responsible for the activation of the zygotic gene twist.
(19) Finally, the twisted nose was treated by freeing the nasal components, straightening the bone and cartilage, and replacing them in their anatomical positions.
(20) It doesn’t do a lot at the moment, but there’s a lot of potential for a modern twist on board games here.