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

Examples of MRI in a Sentence

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Often associated with party balloons, helium is indispensable to magnetic resonance imaging (MRI) scanners, aerospace and the manufacture of microchips for artificial intelligence. Deni Ellis Béchard, Scientific American, 18 Mar. 2026 The Timberwolves announced before their game on Tuesday against the Phoenix Suns that Edwards would be re-evaluated in one to two weeks, after the sixth-year guard underwent an MRI exam. CBS News, 17 Mar. 2026 Helium is also a crucial element in medicine, used to cool MRI machines, according to the National Academies of Sciences, Engineering, and Medicine. David Goldman, CNN Money, 17 Mar. 2026 Yet standard neurological imaging, such as MRI scans, almost never detects abnormalities, and most physicians, who understand the symptoms’ basis in only the most rudimentary sense, can offer little useful counsel. Jacob Stern, The Atlantic, 16 Mar. 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 22 Mar. 2026.

Kids Definition

Medical Definition

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