low-level radiation suffusing the surface of the earth
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Background radiation Definition from Government Dictionaries & Glossaries
(*) Nuclear (or ionizing) radiations arising from within the body and from the surroundings to which individuals are always exposed.
Source: U.S. Department of Defense, Joint Doctrine Division. ( About )Background radiation Definition from Science & Technology Dictionaries & Glossaries
Radiation from cosmic sources; naturally occurring radioactive materials, including radon (except as a decay product of source or special nuclear material) and global fallout as it exists in the environment from the testing of nuclear explosive devices. It does not include radiation from source, byproduct, or special nuclear materials regulated by the Nuclear Regulatory Commission. The typically quoted average individual exposure from background radiation is 360 millirems per year.
A service to the public by The U.S. Nuclear Regulatory Commission (NRC).Background radiation Definition from Encyclopedia Dictionaries & Glossaries
Background radiation is the ionizing radiation constantly present in the natural environment of the Earth, which is emitted by natural and artificial sources.
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Background radiation Definition from Medicine Dictionaries & Glossaries
ionizing radiation from natural sources, such as terrestrial radiation due to radionuclides in the soil or cosmic radiation originating in outer space.
Source: Centers for Disease Control and Prevention (CDC) ( About )Background radiation Definition from Language, Idioms & Slang Dictionaries & Glossaries
Noun
1. radiation coming from sources other than those being observed
(hypernym) background, background signal
