: magnetic resonance imaging
also : the procedure in which magnetic resonance imaging is used

Examples of MRI in a Sentence

Recent Examples on the Web
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At that time, functional MRI showed strong activation of the nucleus accumbens — a brain area that mediates reward, cravings, and addiction. David S. Ludwig, STAT, 9 Apr. 2026 The Cubs announced before the game that ace Cade Horton would miss the rest of the season after an MRI revealed UCL damage in his right elbow. CBS News, 8 Apr. 2026 Helium is used in MRI scanners and for propelling rockets. Npr Staff, NPR, 7 Apr. 2026 Redick had said Saturday afternoon that the MRI was conducted on the wrong area of Reaves, resulting in a second MRI to be done Saturday morning that ultimately revealed the Grade 2 left oblique muscle injury. Benjamin Royer, Oc Register, 7 Apr. 2026 See All Example Sentences for MRI

Word History

First Known Use

1982, in the meaning defined above

Time Traveler
The first known use of MRI was in 1982

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Cite this Entry

“MRI.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/MRI. Accessed 12 Apr. 2026.

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Medical Definition

: magnetic resonance imaging
also : a procedure in which magnetic resonance imaging is used
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