(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.
Wrinkle
Definition:
(n.) A winkle.
(n.) A small ridge, prominence, or furrow formed by the shrinking or contraction of any smooth substance; a corrugation; a crease; a slight fold; as, wrinkle in the skin; a wrinkle in cloth.
(n.) hence, any roughness; unevenness.
(n.) A notion or fancy; a whim; as, to have a new wrinkle.
(v. t.) To contract into furrows and prominences; to make a wrinkle or wrinkles in; to corrugate; as, wrinkle the skin or the brow.
(v. t.) Hence, to make rough or uneven in any way.
(v. i.) To shrink into furrows and ridges.
Example Sentences:
(1) Transmission electron microscopy demonstrated that these blebs were devoid of organelles and microvilli; scanning electron microscopy revealed that the blebs were highly wrinkled and more numerous than were the projections observed in tissue from animals treated with testosterone alone, or in tissue from unoperated controls.
(2) However, patients can be taught how to retard the onset of wrinkles by avoiding unprotected sun exposure, unnecessary facial movements, and certain sleeping positions.
(3) Besides the rough, wrinkled, and brown or black surface of the fingertips, microwrinkles of the epidermis occur on the skin ridges, which have so far not been described.
(4) In fact, in some patients the lower-lid wrinkling appears far worse after fat removal.
(5) Substratum wrinkling was indicative of tension development and quantitated as percent of cells contracted.
(6) SMC also displayed several structurally detectable interactions with the fibrin substratum, such as organization of the gel by means of extension of numerous filamentous processes and contraction and wrinkling of the gel.
(7) A recipient cornea gradually developed wrinkling and opacification in Bowman's layer following an uneventful myopic epikeratoplasty.
(8) "But then a customer pointed out that our carpet was smoking and a chair was beginning to wrinkle in the heat, caused by the concentrated sun coming through the window."
(9) More than once, she replies to a question by wrinkling her nose and saying: “It’s all in the book.” Tempest can’t quite see why the breadth of her output – songs, poems, plays, a novel – is notable, because it’s all about writing and performance.
(10) Some intercalated sheaths had a wrinkled irregular configuration and some lacked a light-microscopically distinct myelin layer.
(11) Adhesions to the Gore-SM occurred at wrinkles in or at the edges of the membrane.
(12) During the course of the irradiation the animals develop permanent wrinkles on the exposed dorsal surface, which can be recorded in plastic impressions.
(13) The deflecting wrinkle is a well-known character state of the lower m2 and M1 of the human dentition, but there is little information regarding its presence in great apes.
(14) An algorithm is used to transform the number of wrinkles, recorded just before and 2.5 and 6 hr after the injection, into the intensity of the oedematous reaction.
(15) Fine wrinkling, coarse wrinkling, sallowness, looseness, and hyperpigmentation were significantly improved with tretinoin therapy.
(16) Kaeng Khoi virus was recovered from bedbugs (Stricticimex parvus and Cimex insuetus) and from suckling wrinkle-lipped bats (Tadarida plicata) collected in central Thailand.
(17) Hacked Off, which campaigns on behalf of victims of press intrusion for tighter press regulation, said this would help the government smooth out the wrinkles in the relevant clause added to the crime and courts bill, which attempts to define which publishers should be in or outside the regulator's remit.
(18) The percentage of cells showing a decrease of wrinkles was significantly higher (P less than 0.05 at 5 min and P less than 0.001 at 10 min) during the ANP-treated period than during the control period.
(19) Most dogs give a series of increasingly serious warning signs before they lose their tempers: lick their lips, blink, turn their heads away, curl their lip, lower their ears, wrinkle their foreheads, and if the dog that's annoying them doesn't get the message, they may growl or bare their teeth, and if that's still not enough it will be head and chest forward, muscles flexed, and bang, you've had it.
(20) Other specimens showed wrinkling of the outer layer that was seen later to peel off.