- the act of irradiating.
- the state of being irradiated.
- intellectual or spiritual enlightenment.
- a ray of light; beam.
- Optics. the apparent enlargement of an object when seen against a dark background.
- the use of x-rays or other forms of radiation for the treatment of disease, the making of x-ray photographs, the manufacture of vitamin D, etc.
- exposure or the process of exposure to x-rays or other radiation.
- Physics. irradiance.
Origin of irradiation
Examples from the Web for irradiation
But an irradiation in the other direction is, unfortunately, at least as likely, if not more so.A Ray of Light in Islamist Gloom
July 17, 2012
The phenomena of magnetism were ascribed by him to the irradiation of angels.Primitive Psycho-Therapy and Quackery
Robert Means Lawrence
The force of the irradiation has been directly proportional with the squares of the distances.Eureka:
Edgar A. Poe
However, is it not interesting to attribute the apparent movement to irradiation?Visual Illusions
That was charming and vivacious, and his smile was an irradiation.Crome Yellow
"Excuse me," he said with an irradiation of smiles, but yet with a kind of bewilderment.The Ball and The Cross
- the act or process of irradiating or the state of being irradiated
- the apparent enlargement of a brightly lit object when it is viewed against a dark background
- a shaft of light; beam or ray
- the therapeutic or diagnostic use of radiation, esp X-rays
- exposure of a patient to such radiation
- another name for radiation, irradiance
Word Origin and History for irradiation
1580s, from French irradiation, from Latin *irradiationem, noun of action from past participle stem of irradiare (see irradiate). Originally of light (literally and figuratively); of X-rays, etc., from 1901.
- Exposure or subjection to the action of radiation for diagnostic or therapeutic purposes.
- Medical treatment by exposure to radiation.
- The spread of a nervous impulse beyond the usual path of conduction.