irradiate

[v. ih-rey-dee-eyt; adj. ih-rey-dee-it, -eyt]
verb (used with object), irradiated, irradiating.
1.
to shed rays of light upon; illuminate.
2.
to illumine intellectually or spiritually.
3.
to brighten as if with light.
4.
to radiate (light, illumination, etc.).
5.
to heat with radiant energy.
6.
to treat by exposure to radiation, as of ultraviolet light.
7.
to expose to radiation.
verb (used without object), irradiated, irradiating.
8.
Archaic.
a.
to emit rays; shine.
b.
to become radiant.
adjective
9.
irradiated; bright.

Origin:
1595–1605; < Latin irradiātus, past participle of irradiāre to shine upon. See ir-1, radiate

irradiatingly, adverb
irradiative, adjective
irradiator, noun
nonirradiated, adjective
unirradiated, adjective
unirradiative, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
irradiate (ɪˈreɪdɪˌeɪt)
 
vb
1.  (tr) physics to subject to or treat with light or other electromagnetic radiation or with beams of particles
2.  (tr) to expose (food) to electromagnetic radiation to kill bacteria and retard deterioration
3.  (tr) to make clear or bright intellectually or spiritually; illumine
4.  a less common word for radiate
5.  obsolete (intr) to become radiant
 
ir'radiative
 
adj
 
ir'radiator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

irradiate
c.1600, "to cast beams of light upon," from L. irradiatus, pp. of irradiare "shine forth," from in- "in" + radiare "to shine" (see radiate). Meaning "expose to radiation other than light" (originally x-rays) is from 1901.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

irradiate ir·ra·di·ate (ĭ-rā'dē-āt')
v. ir·ra·di·at·ed, ir·ra·di·at·ing, ir·ra·di·ates

  1. To expose to radiation, as for diagnostic or therapeutic purposes.

  2. To treat with radiation.

  3. To apply radiation to a structure or organism.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
irradiate   (ĭ-rā'dē-āt')  Pronunciation Key 
To expose to or treat with radiation. For example, meat sold as food is often irradiated with x-rays or other radiation to kill bacteria; uranium 238 can be irradiated with neutrons to create fissionable plutonium 239.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Radioactive cobalt is used to treat cancer patients and to irradiate food.
Radiation sources at the calibration facility are used to irradiate whole body and extremity dosimeters.
Another way to irradiate both sides is to have two offset beams that irradiate the chicken from top and bottom.
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