gad·​o·​lin·​i·​um | \ ˌga-də-ˈli-nē-əm How to pronounce gadolinium (audio) \

Definition of gadolinium

: a magnetic metallic element of the rare-earth group occurring in combination in gadolinite and several other minerals — see Chemical Elements Table

Examples of gadolinium in a Sentence

Recent Examples on the Web Mixed in the water will be the element gadolinium, which will absorb the neutron generated in the collision, emitting a second flash of Cherenkov light. Kenneth Chang, New York Times, "How to Spot a Nuclear Bomb Program? Look for Ghostly Particles," 27 Mar. 2018 Meanwhile the gadolinium in the water will sop up the neutron, a process that emits a second flash. Jesse Emspak, Scientific American, "Detection of Ghostly Particles Could Unmask Illicit Nuclear Weapons," 1 May 2017 The lawsuit, obtained by SELF, shows that the couple is now suing several companies that manufacture gadolinium contrast. Korin Miller, SELF, "How Much Do You Need to Worry About MRI Contrast, Really?," 3 Nov. 2017 The Norris' lawsuit acknowledges no official, publicly stated link between gadolinium and symptoms reported by people who believe the metal has affected their health. CBS News, "Chuck Norris says MRI chemical poisoned his wife," 2 Nov. 2017 However, serious reactions to gadolinium are rare—and the information an MRI with contrast can provide can be truly lifesaving. Korin Miller, SELF, "How Much Do You Need to Worry About MRI Contrast, Really?," 3 Nov. 2017 After treatment ended, her doctor also screened her with yearly MRI scans using a dye called gadolinium. Liz Szabo, USA TODAY, "In cancer war, patients and doctors worry about unneeded scans and therapy," 26 Oct. 2017 Other trace elements including rare metals such as gadolinium – used in medical imaging – were also found by the scientists from the government's institute of aquatic science and technology. John Revill, Alaska Dispatch News, "Swiss flush away a fortune in gold and silver, sewage study shows," 13 Oct. 2017 The new model suggests our home planet contains significantly more sodium, potassium, chlorine, zinc, strontium, fluorine, gallium, rubidium, niobium, gadolinium, tantalum, helium, argon, and krypton than previously believed. Jay Bennett, Popular Mechanics, "Scientists Create Most Accurate Estimate of Earth's Composition," 18 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gadolinium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of gadolinium

1886, in the meaning defined above

History and Etymology for gadolinium

gadolin- (in gadolinite, after Johan Gadolin †1852 Finnish chemist and mineralogist) + New Latin -ium -ium

Note: Named by the Swiss chemist Jean Charles Galissard de Marignac (1817-94); see "Le Y α de M. de Marignac est définitivement nommé gadolinium," Note de M. Lecoq de Boisbaudran, Comptes Rendus hebdomadaires des séances de lʼAcadémie des Sciences, tome 102 (janvier-juin 1886), p. 902.

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The first known use of gadolinium was in 1886

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Cite this Entry

“Gadolinium.” The Dictionary, Merriam-Webster Inc., Accessed 6 December 2019.

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gad·​o·​lin·​i·​um | \ ˌgad-ᵊl-ˈin-ē-əm How to pronounce gadolinium (audio) \

Medical Definition of gadolinium

: a magnetic metallic element of the rare-earth group symbol Gd — see Chemical Elements Table

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