radiation

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[Ra`di*a┬Ětion]

Radiation is energy transmitted in waves or a stream of particles. The first thing you think of as radiation is probably X rays, but what cooks your food in the microwave oven is also radiation.

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The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.

Noun
(medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance

Noun
the act of spreading outward from a central source

Noun
a radial arrangement of nerve fibers connecting different parts of the brain

Noun
the spread of a group of organisms into new habitats

Noun
energy that is radiated or transmitted in the form of rays or waves or particles

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Noun
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

Noun
syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and


n.
The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.

n.
The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.


Radiation

Ra`di*a"tion , n. [L. radiatio: cf. F. radiation.] 1. The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness. 2. The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.

The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.

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Usage Examples

The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza, let alone cooking it.

I am now almost certain that we need more radiation for better health.

Most medical physicists work in the physics of radiation oncology making sure that the desired dose is given to the cancer and the dose to normal tissues are minimized.

Misspelled Form

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Other Usage Examples

The technology used to detect if vehicles are carrying radioactive material is so sensitive it can tell if a person recently received radiation as part of a medical procedure.

In the Radiation Laboratory we count it a privilege to do everything we can to assist our medical colleagues in the application of these new tools to the problems of human suffering.

I will continue to push for doubling the strength of the U.S. Border Patrol, and to make sure that every cargo container that enters this nation is screened for radiation and potential weapons of mass destruction.

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