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nuclear magnetic resonance
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noun Physics.
the selective absorption of electromagnetic radiation by an atomic nucleus in the presence of a strong, static, magnetic field: used in research and in medicine to monitor tissue metabolism and to distinguish between normal and abnormal cells. Abbreviation: NMR
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Origin of nuclear magnetic resonance
First recorded in 1940â45
Words nearby nuclear magnetic resonance
nuclear fuel, nuclear fusion, nuclearism, nuclear isomer, nuclearize, nuclear magnetic resonance, nuclear magnetic resonance scanner, nuclear magneton, nuclear medicine, nuclear membrane, nuclear option
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use nuclear magnetic resonance in a sentence
British Dictionary definitions for nuclear magnetic resonance
nuclear magnetic resonance
noun
a technique for determining the magnetic moments of nuclei by subjecting a substance to high-frequency radiation and a large magnetic field. The technique is used as a method of determining structureAbbreviation: NMR See also electron spin resonance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for nuclear magnetic resonance
nuclear magnetic resonance
The absorption of electromagnetic energy (typically radio waves) by the nuclei of atoms placed in a strong magnetic field. The nuclei of different atoms absorb unique frequencies of radiation depending on their environment, thus by observing which frequencies are absorbed by a sample placed in a strong magnetic field (and later emitted again, when the magnetic field is removed), it is possible to learn much about the sample's makeup and structure. Nuclear magnetic resonance has no known side effects on the human body, and is therefore used to analyze soft body tissues in magnetic resonance imaging (MRI).
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