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Irradiation   /ɪrˌeɪdiˈeɪʃən/   Listen
Irradiation

noun
1.
The condition of being exposed to radiation.
2.
A column of light (as from a beacon).  Synonyms: beam, beam of light, light beam, ray, ray of light, shaft, shaft of light.
3.
(physiology) the spread of sensory neural impulses in the cortex.
4.
The apparent enlargement of a bright object when viewed against a dark background.
5.
(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus.
6.
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance.  Synonyms: actinotherapy, radiation, radiation therapy, radiotherapy.






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"Irradiation" Quotes from Famous Books



... to the fact that there were other people present. His face had grown still whiter but upon it there was already an irradiation of joy. "Do you mean it?" he said in a low voice vibrating with some strong feeling. "Do you ...
— The Silver Butterfly • Mrs. Wilson Woodrow

... clearness. Simplicity of outline and concentration of peculiarity upon one feature are important elements of legibility. Even a letter of small size, like v, is brought into the first group by a combination of these two qualities. Serifs are necessary to prevent irradiation, or an overflowing of the white on the black, but they should be stubby; if long, they take on the character of ornament and become confusing. The letters g and a are complicated without being distinctive ...
— The Booklover and His Books • Harry Lyman Koopman

... not be mistaken in the nature of the irradiation thrown from the centre light, whose clear rays broke all the angles, all the projections of the cavern. This light proceeded from an electric source, and its white colour betrayed its origin. It was the sun of this cave, and it filled ...
— The Secret of the Island • W.H.G. Kingston (translation from Jules Verne)

... High Street with shops resumed again in good earnest and went on, and the lines of the steam-tramway that started out from before my feet, and were here shining and acutely visible with reflected skylight and here lost in a shadow, took up for one acute moment the greasy yellow irradiation of a newly lit gaslamp as they vanished round the bend. Beyond, spread a darkling marsh of homes, an infinitude of little smoking hovels, and emergent, meager churches, public-houses, board schools, and other buildings amidst the prevailing ...
— In the Days of the Comet • H. G. Wells

... glance look up, And, in a tone elaborately low Beginning, lead his voice through many a maze 555 A minuet course; and, winding up his mouth, From time to time, into an orifice Most delicate, a lurking eyelet, small, And only not invisible, again Open it out, diffusing thence a smile 560 Of rapt irradiation, exquisite. Meanwhile the Evangelists, Isaiah, Job, Moses, and he who penned, the other day, The Death of Abel, [Z] Shakespeare, and the Bard Whose genius spangled o'er a gloomy theme 565 With fancies thick as his inspiring stars, [a] And Ossian (doubt not, ...
— The Poetical Works of William Wordsworth, Vol. III • William Wordsworth



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