radiation (redirected from thalamic radiation)

ra·di·a·tion  (rd-shn)

n.

1. The act or process of radiating: the radiation of heat and light from a fire.

2. Physics

a. Emission and propagation and emission of energy in the form of rays or waves.

b. Energy radiated or transmitted as rays, waves, in the form of particles.

c. A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.

3.

a. The act of exposing or the condition of being exposed to such energy.

b. The application of such energy, as in medical treatment.

4. Anatomy Radial arrangement of parts, as of a group of nerve fibers connecting different areas of the brain.

5.

a. The spread of a group of organisms into new habitats.

b. Adaptive radiation.

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radi·ation·al, radi·ative adj.

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radiation

Noun

1. Physics

a. the emission of energy as particles, electromagnetic waves or sound

b. the particles or waves emitted

2. the process of radiating

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radiation  (rd-shn)

1.

a. Streams of photons, electrons, small nuclei, or other particles. Radiation is given off by a wide variety of processes, such as thermal activity, nuclear reactions (as in fission), and by radioactive decay.

b. The emission or movement of such particles through space or a medium, such as air. See Notes at conductionelectromagnetic radiation

2. The use of such energy, especially x-rays, in medical diagnosis and treatment.

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Radiation

See also physics.

actinotherapy

radiotherapy.

bolograph

the record produced by a bolometer.

bolometer

a device used in bolometry.

bolometry

the measurement of minute amounts of radiant energy, especially infrared spectra. — bolometrist, n. — bolometric, adj.

curiescopy

radioscopy.

diathermancy

the capacity to transmit infrared radiation. — diathermanous, adj.

dosimeter

a device, carried or worn by people working near radiation for measuring the amount of radiation to which they are exposed.

dosimetry

the measurement by a dosimeter of the dosage of radiation a person might have received. See also drugs. — dosimetrist, n. — dosimetric, dosimetrical adj.

fluorometer

an instrument for measuring the emission of radiation in the form of visible light and identifying the substance that is its source. — fluorometric, adj.

fluorometry

the measurement of fluorescence, or visible radiation, by means of a fluorometer. — fluorometric, adj.

fluoroscopy

an examination by means of a screen coated with a fluorescent substance responsive to radiation from x rays. — fluoroscopic, adj.

metallography

the study of metals and their structures and properties by the use of microscopy and x rays.

pyelography

the science or technique of making x-ray photographs of the kidneys, renal pelves, and ureters, using injection of opaque solutions or radiopaque dyes. — pyelographic, adj.

radiesthesia

the sensitivity of some humans to radiation of various kinds, as in water divining or nonmedical diagnosis. — radiesthetic, adj.

radioactivity

the state, property, or process of being radioactive.

radiography

the production of photographic images on film using radiation from other radioactive substances instead of light. Also called x-ray scotography, shadowgraphy. — radiograph, radiographer, n. — radiographic, radiographical, adj.

radiology

1. the science that studies x rays or radiation from radioactive substances, esp. for medical purposes.
2. the examination or photographing of parts of the body with such rays.
3. the interpretation of the resulting photographs. — radiologist, n. — radiologie, radiological, adj.

radiometallography

the study of metals and their structures by the use of x rays.

radioscopy

the study or observation of the inner structure of opaque materials by means of x rays or other radioactive substances. Also called curiescopy.

radiosensibility

sensitivity to the effects of radiation, as of parts of the body. Also called radiosensitivity.

radiosensitivity

radiosensibility. — radiosensitive, adj.

radiotechnology

the science and technology of applying radiation and x rays to industrial use. See also radio.

radiotherapy

a method of treating diseases with x rays or the radiation from other radioactive substances. Also called actinotherapy. — radiotherapist, n. — radiotherapeutic, adj.

roentgenism, röntgenism

1. the treatment of disease with x rays or roentgen rays.
2. the effect of misuse or overexposure to these rays.

roentgenogram, röntgenogram

an x-ray photograph.

roentgenography, röntgenography

x-ray photography.

scotograph

a radiograph.

shadowgraphy

radiography.

tomography

x-ray photography of a selected plane of the body by a method that eliminates the outline of structures in other planes. — tomographic, adj.

x-ray scotography

radiography.

xeroradiography

a process of recording x-ray images by electrostatic means. — xeroradiographic, adj.

Thesaurus

Noun	1.	radiation - energy that is radiated or transmitted in the form of rays or waves or particles ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes cosmic radiation - radiation coming from outside the solar system electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge energy, free energy - (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs; "energy can take a wide variety of forms" solar radiation - radiation from the sun
	2.	radiation - the act of spreading outward from a central source bombardment - the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays) emission, emanation - the act of emitting; causing to flow forth
	3.	radiation - 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 some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation" radiation sickness, radiation syndrome syndrome - a pattern of symptoms indicative of some disease
	4.	radiation - the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay radioactivity corpuscular radiation, particulate radiation - a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons) emission - the release of electrons from parent atoms
	5.	radiation - the spread of a group of organisms into new habitats adaptive radiation - the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches spread, spreading - process or result of distributing or extending over a wide expanse of space natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
	6.	radiation - a radial arrangement of nerve fibers connecting different parts of the brain neural structure - a structure that is part of the nervous system
	7.	radiation - (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance actinotherapy, radiation therapy, radiotherapy, irradiation therapy - (medicine) the act of caring for someone (as by medication or remedial training etc.); "the quarterback is undergoing treatment for a knee injury"; "he tried every treatment the doctors suggested"; "heat therapy gave the best relief" phototherapy - the use of strong light to treat acne or hyperbilirubinemia of the newborn Curietherapy, radium therapy - the use of radium in radiation therapy X-ray therapy - the therapeutic use of X rays medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques

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radiation

noun emission, rays, emanation

Translations

radiation [reɪdɪˈeɪʃən] n → radiación f

radiation [reɪdɪˈeɪʃən] n → rayonnement m;

(radioactive) → radiation f

radiation [reɪdɪˈeɪʃən] n (radioactivity) → radioaktive Strahlung f;

(from sun etc) → Strahlung f

radiation [reɪdɪˈeɪʃən] n → irradiamento;

(radioactive) → radiazione f