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RADIATION
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I. (noun)
Sense 1
Meaning:
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
Synonyms:
actinotherapy; irradiation; radiation; radiation therapy; radiotherapy
Classified under:
Nouns denoting acts or actions
Hypernyms ("radiation" is a kind of...):
therapy ((medicine) the act of caring for someone (as by medication or remedial training etc.))
Domain category:
medical specialty; medicine (the branches of medical science that deal with nonsurgical techniques)
Hyponyms (each of the following is a kind of "radiation"):
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)
Sense 2
Meaning:
The act of spreading outward from a central source
Classified under:
Nouns denoting acts or actions
Hypernyms ("radiation" is a kind of...):
emanation; emission (the act of emitting; causing to flow forth)
Hyponyms (each of the following is a kind of "radiation"):
bombardment (the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays))
Derivation:
radiate (extend or spread outward from a center or focus or inward towards a center)
Sense 3
Meaning:
A radial arrangement of nerve fibers connecting different parts of the brain
Classified under:
Hypernyms ("radiation" is a kind of...):
neural structure (a structure that is part of the nervous system)
Derivation:
radiate (extend or spread outward from a center or focus or inward towards a center)
Sense 4
Meaning:
The spread of a group of organisms into new habitats
Classified under:
Hypernyms ("radiation" is a kind of...):
action; activity; natural action; natural process (a process existing in or produced by nature (rather than by the intent of human beings))
spread; spreading (process or result of distributing or extending over a wide expanse of space)
Hyponyms (each of the following is a kind of "radiation"):
adaptive radiation (the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches)
Derivation:
radiate (spread into new habitats and produce variety or variegate)
Sense 5
Meaning:
Energy that is radiated or transmitted in the form of rays or waves or particles
Classified under:
Nouns denoting natural phenomena
Hypernyms ("radiation" is a kind of...):
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)
Hyponyms (each of the following is a kind of "radiation"):
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)
solar radiation (radiation from the sun)
Derivation:
radiate (send out rays or waves)
Sense 6
Meaning:
The spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
Synonyms:
radiation; radioactivity
Classified under:
Nouns denoting natural processes
Hypernyms ("radiation" is a kind of...):
emission (the release of electrons from parent atoms)
Hyponyms (each of the following is a kind of "radiation"):
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))
Sense 7
Meaning:
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
Example:
he was suffering from radiation
Synonyms:
radiation; radiation sickness; radiation syndrome
Classified under:
Nouns denoting stable states of affairs
Hypernyms ("radiation" is a kind of...):
syndrome (a pattern of symptoms indicative of some disease)
Context examples:
An abbreviation for a chemotherapy combination used with radiation therapy to treat childhood Hodgkin lymphoma.
(ABVE, NCI Dictionary)
Very large doses of radiation may cause death.
(Acute radiation sickness, NCI Dictionary)
The patient receives psoralen (a drug that becomes active when it is exposed to light) by mouth or applied to the skin, followed by ultraviolet A radiation.
(Methoxsalen With Ultraviolet A Therapy, NCI Dictionary)
Active surveillance may be used to avoid or delay the need for treatments such as radiation therapy or surgery, which can cause side effects or other problems.
(Active surveillance, NCI Dictionary)
Radiation treatment in which the total dose of radiation is given over a shorter period of time (fewer days) compared to standard radiation therapy.
(Accelerated radiation therapy, NCI Dictionary)
Radiation treatment in which the total dose of radiation is divided into small doses and the treatments are given more than once a day.
(Accelerated-fraction radiation therapy, NCI Dictionary)
He sits motionless, like a spider in the centre of its web, but that web has a thousand radiations, and he knows well every quiver of each of them.
(The Memoirs of Sherlock Holmes, by Sir Arthur Conan Doyle)
If you do need treatment, surgery and radiation are options.
(Acoustic Neuroma, NIH: National Institute of Deafness and Communication Disorders)
It is being studied in the treatment of dry mouth caused by radiation therapy for cancer.
(Acupuncture-like transcutaneous electrical nerve stimulation, NCI Dictionary)
Also called acute radiation sickness, radiation poisoning, radiation sickness, and radiation sickness syndrome.
(Acute radiation syndrome, NCI Dictionary)
