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Attenuation   Listen
noun
Attenuation  n.  
1.
The act or process of making slender, or the state of being slender; emaciation.
2.
The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases.
3.
The process of weakening in intensity; diminution of virulence; as, the attenuation of virus.






Collaborative International Dictionary of English 0.48








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"Attenuation" Quotes from Famous Books



... seen along the line AE. And so it may occur that when it ought not to be visible in the absence of vapours, because the line AE encounters the rotundity of the Earth, it will be perceived in the line AF by refraction. But this angle EAF is scarcely ever more than half a degree because the attenuation of the vapours alters the waves of light but little. Furthermore these refractions are not altogether constant in all weathers, particularly at small elevations of 2 or 3 degrees; which results from the different quantity of aqueous ...
— Treatise on Light • Christiaan Huygens

... the studies now occupying my attention, [Footnote: In 1880. Especially engaged in the study of chicken cholera and the attenuation of virulence—Translator.] I was attempting to extend the germ theory to certain common diseases. I do not know when I can return to that work. Therefore in my desire to see it carried on by others, I take the liberty of ...
— The Harvard Classics Volume 38 - Scientific Papers (Physiology, Medicine, Surgery, Geology) • Various

... mystification!" Paul declared; but grasping his hand gratefully in attenuation of ...
— The Lesson of the Master • Henry James

... Contraction.— N. contraction, reduction, diminution; decrease &c. 36 of size; defalcation, decrement; lessening, shrinking &c. v.; compaction; tabes[obs3], collapse, emaciation, attenuation, tabefaction[obs3], consumption, marasmus[obs3], atrophy; systole, neck, hourglass. condensation, compression, compactness; compendium &c. 596; squeezing &c. v.; strangulation; corrugation; astringency; ...
— Roget's Thesaurus

... invidious, even to profit by so high a tide; he felt himself too much "in" it, as he might have said: a moment's reflexion put him more in than any one. The way Milly neglected him for other cares while Kate and Mrs. Lowder, without so much as the attenuation of a joke, introduced him to English ladies—that was itself a proof; for nothing really of so close a communion had up to this time passed between them as the single bright look and the three gay words (all ostensibly of the last lightness) with which ...
— The Wings of the Dove, Volume II • Henry James

... tears, admired that discipline which sometimes prepares the young to die; which, by sharp trials of anguish, and long days of weariness, weans them from that keen sense of mortal enjoyment which is so naturally theirs; which, through the attenuation of the body, illuminates the soul, and, as it steals the bloom from the cheek, kindles the lustre of faith in the eye, and makes even that young spirit look, unfaltering, across the dark river, and, putting aside its earthly loves and its reasonable expectations, exclaim, "Now I ...
— The Crown of Thorns - A Token for the Sorrowing • E. H. Chapin

... a demon. Tortured out of all knowledge, the Grande Polonaise screamed and writhed in its agony. It writhed through the windows, seeking its natural attenuation in the open air. It writhed through the shut house and was beaten back, pitilessly, by the roof and walls. To let it loose thus was Alice's defiance of the house and ...
— The Three Sisters • May Sinclair

... has occurred of the discovery of a missing link, or connecting form (see Fig. 88). The fossil (B), which was found in New Jersey, stands in an intermediate position between the stag and the elk. In the stag (A) the skull is high, showing but little of that anterior attenuation which is such a distinctive feature of the skull of the elk (C). The nasal bones (N) of the former, again, are remarkably long when compared with the similar bones of the latter, and the premaxillaries (PMX), instead ...
— Darwin, and After Darwin (Vol. 1 and 3, of 3) • George John Romanes

... a deep interest in the anecdote. Then thinking it over gravely she returned with her odd intonation: "Yes, but you do see him!" I had to admit that this was the case; and I wasn't so prepared with an effective attenuation as I could have wished. She eased the situation off, however, by the charming quaintness with which she finally said: "Well, I wouldn't want him to be lonely!" This time she rose in earnest, but I persuaded her to let me keep the album to show Mr. Paraday. ...
— The Death of the Lion • Henry James

... however, this difference in the Bovarism of Nature's most exquisite moments. They seem other than they are not by seeming more than they are but by seeming less. It is by the attenuation of the medium, by an approach to obscurity, by an approximation to the faintness of a dream, that Beauty is manifested. I recall the Greek head of a girl once shown at the Burlington Fine Arts Club,—over which Rodin, who chanced to see it ...
— Impressions And Comments • Havelock Ellis

... range themselves one after another on the side of liberty. Thus the extent of the evil will become reduced of itself, and instead of advancing, as during some years past, towards a colossal development of servitude, it will proceed in the direction of its gradual attenuation. ...
— The Uprising of a Great People • Count Agenor de Gasparin

... the hypothesis, there exists nothing positive outside Ideas. It must therefore be by a diminution. So at the base of ancient philosophy lies necessarily this postulate: that there is more in the motionless than in the moving, and that we pass from immutability to becoming by way of diminution or attenuation. ...
— Creative Evolution • Henri Bergson

... virulent form exactly as vaccinia protects against small-pox. The particular disease experimented with was that infectious malady of poultry known familiarly as "chicken cholera." In October of the same year Pasteur announced the method by which this "attenuation of the virus," as he termed it, had been brought about—by cultivation of the disease germs in artificial media, exposed to the air, and he did not hesitate to assert his belief that the method would prove "susceptible of generalization"—that is ...
— A History of Science, Volume 4(of 5) • Henry Smith Williams

... of reason is more or less hindered in sleep, according as the inner sensitive powers are more or less overcome by sleep, on account of the violence or attenuation of the evaporations. Nevertheless it is always hindered somewhat, so as to be unable to elicit a judgment altogether free, as stated in the First Part (Q. 84, A. 8, ad 2). Therefore what it does then is not imputed to it ...
— Summa Theologica, Part II-II (Secunda Secundae) • Thomas Aquinas

... value to a person who thought he had something to say; when it was the custom to spread a two-minute remark out to ten; when a man's mouth was a rolling-mill, and busied itself all day long in turning four-foot pigs of thought into thirty-foot bars of conversational railroad iron by attenuation; when subjects were seldom faithfully stuck to, but the talk wandered all around and arrived nowhere; when conversations consisted mainly of irrelevancies, with here and there a relevancy, a relevancy with an embarrassed look, as not being able to ...
— Innocents abroad • Mark Twain

... anything, it signifies that the two diseases are in essence one and the same, differing only in degree. M. Pasteur has recently found that by passing the bacillus of "rouget" of pigs through rabbits, he can effect a considerable attenuation of the "rouget" virus. He has shown that rabbits inoculated with the bacillus of rouget become very ill and die, but if the inoculations be carried through a series of rabbits, a notable modification results in the bacillus. As regards the rabbits themselves, no favorable change ...
— Scientific American Supplement, No. 421, January 26, 1884 • Various



Words linked to "Attenuation" :   weakness, weakening



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