| illusion of movement | Successive stimulation of neighboring retinal points which causes the sensation of movement. Oculogravic illusion, apparent movement of the visual field when the body is subjected to acceleration; due to gravity. Oculogyral illusion, an illusion occurring in angular acceleration in which the position of fixed light appears to drift. Optical illusion, a false interpretation of the colour, form, size, or movement of a visual sensation. (05 Mar 2000) |
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| illusional | Relating to or of the nature of an illusion. (05 Mar 2000) |
| illusionist | One given to illusion; a visionary dreamer. Source: Websters Dictionary (01 Mar 1998) |
| illusions | The misinterpretation of a real external, sensory experience. (12 Dec 1998) |
| illustrate | 1. To make clear, bright, or luminous. "Here, when the moon illustrates all the sky." (Chapman) 2. To set in a clear light; to exhibit distinctly or conspicuously. "To prove him, and illustrate his high worth." (Milton) 3. To make clear, intelligible, or apprehensible; to elucidate, explain, or exemplify, as by means of figures, comparisons, and examples. 4. To adorn with pictures, as a book or a subject; to elucidate with pictures, as a history or a romance. 5. To give renown or honor to; to make illustrious; to glorify. "Matter to me of glory, whom their hate Illustrates." (Milton) Origin: L. Illustratus, p.p. Of illustrare to illustrate, fr. Illustris bright. See Illustrious. Source: Websters Dictionary (01 Mar 1998) |
| ilmenite | <chemical> Titanic iron. See Menaccanite. Origin: So called from Ilmen, a branch of the Ural Mountains. Source: Websters Dictionary (01 Mar 1998) |
| ilmenium | <chemistry> A supposed element claimed to have been discovered by R.Harmann. Origin: NL. See Ilmenite. Source: Websters Dictionary (01 Mar 1998) |
| ILO | <abbreviation> International Labour Organization. (05 Mar 2000) |
| iloprost | <chemical> A stable synthetic analog of epoprostenol but with a longer half-life than the parent compound. The drug has vasodilator and antiplatelet activities and improves the fibrinolytic activity in patients with atherosclerotic disease, thereby providing them with further antithrombotic protection. It is also used in the treatment of raynaud's disease and provides dose-dependent protection of the heart against some of the deleterious effects of ischemia and reperfusion. Pharmacological action: platelet aggregation inhibitors, vasodilator agents. Chemical name: Pentanoic acid, 5-(hexahydro-5-hydroxy-4-(3-hydroxy-4-methyl-1-octen-6-ynyl)-2(1H)-pentalenylidene)- (12 Dec 1998) |
| Ilosvay | Lajos de, Hungarian chemist, *1851. See: Ilosvay reagent. (05 Mar 2000) |
| Ilosvay reagent | Sulfanilic acid 0.5, dissolved in dilute acetic acid 150, mixed with naphthylamine 1, and dissolved in boiling water 20; the blue sediment which forms is dissolved in dilute acetic acid 150; a few drops of this reagent added to water, saliva, or other fluid to be tested will produce a red colour if nitrites are present. (05 Mar 2000) |
| ilvaite | <chemical> A silicate of iron and lime occurring in black prismatic crystals and columnar masses. Origin: From L. Ilva, the island now called Elba. Source: Websters Dictionary (01 Mar 1998) |