Dictionary.com
Thesaurus.com

magnetic resonance imaging

American  

noun

  1. MRI.


magnetic resonance imaging British  

noun

  1. MRI. a noninvasive medical diagnostic technique in which the absorption and transmission of high-frequency radio waves are analysed as they irradiate the hydrogen atoms in water molecules and other tissue components placed in a strong magnetic field. This computerized analysis provides a powerful aid to the diagnosis and treatment planning of many diseases, including cancer

"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

magnetic resonance imaging Scientific  
  1. See MRI


magnetic resonance imaging Cultural  
  1. A technique for forming detailed images of internal organs and tissue. It works by putting the patient inside a magnet, then using radio waves to locate atoms in the tissue. Final production of the image is done by a computer. (Compare x-ray and ultrasound.)


Discover More

MRI images are the most detailed that can be obtained.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Until now, however, scientists have had a limited understanding of exactly where synaptic loss occurs in the brains of living people because conventional imaging methods such as magnetic resonance imaging cannot specifically measure synapses.

From Science Daily ● Aug. 20, 2026

A competitor, Prenuvo, promises “the full picture of your health” through magnetic resonance imaging starting at $1,199 for a scan and core membership plan.

From Barron's ● May 21, 2026

Bjorn, who works at a hospital as a magnetic resonance imaging technologist, agreed.

From BBC ● Apr. 28, 2025

They are developing tools to monitor the placenta non-invasively, Weinberg said, such as advances in magnetic resonance imaging and ultrasounds, both of which can help better visualize the placenta and its blood flow.

From Salon ● May 29, 2024

While other scientists had published papers showing how they used diamond particles attached to gadolinium for magnetic resonance imaging, no one had ever shown that diamond dust itself could be a contrast agent.

From Science Daily ● Apr. 25, 2024

Vocabulary.com logo
by dictionary.com

Join 14,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training