Definition of "magnetic resonance" []

• The phenomenon of absorption of certain frequencies of radio and microwave radiation by atoms placed in a magnetic field. The pattern of absorption reveals molecular structure. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Take a 2009 piece about advances in functional magnetic resonance imaging that ran in the New York Times–owned International Herald Tribune."
• "In the 1970s and '80s, jazzy futuristic tools like positron-emission tomography, magnetic resonance imaging, and single photon-emission computed tomography allowed researchers to analyze the living brain in action."