What does gadolinium mean?
Gadolinium is a silvery-white metallic element with the symbol Gd and atomic number 64, belonging to the lanthanide series of rare-earth metals. It is prized chiefly for its exceptional paramagnetism—the strongest of any stable element near room temperature—which makes gadolinium compounds invaluable as contrast agents in magnetic resonance imaging, where they enhance the visibility of tissues, organs, and blood vessels. Beyond medicine, gadolinium's ability to absorb neutrons finds applications in nuclear reactors, and its unusual magnetic properties are exploited in data-storage and refrigeration research. The element honours the Finnish chemist Johan Gadolin and was isolated from the mineral gadolinite in the late nineteenth century. Though rarely spoken of outside laboratories and hospitals, gadolinium has become a household word for millions of patients who receive it before an MRI scan, making it one of the few elements most people encounter intravenously rather than industrially.
nounA silvery-white, malleable rare-earth metallic element (symbol Gd, atomic number 64) of the lanthanide series. It is best known for its strong paramagnetism, which makes its compounds valuable as contrast agents in magnetic resonance imaging (MRI).
- The metallic element gadolinium (symbol Gd, atomic number 64), a silvery rare-earth metal of the lanthanide series.
- Gadolinium in compound form, especially as paramagnetic contrast agents used medically in MRI scans.
"The radiologist administered a gadolinium-based contrast agent to sharpen the detail of the patient's brain scan."
"Because gadolinium is strongly paramagnetic at room temperature, it is the metal of choice for MRI contrast agents."
"Gadolinium's high neutron-absorption cross-section also makes it useful in nuclear reactor control rods."
Rarely used; as an element, 'gadolinium' is normally treated as an uncountable mass noun. A plural would appear only when referring to distinct atoms, isotopes, or samples in highly technical contexts.
"The spectrograph compared emissions from several gadoliniums enriched in different isotopes."
Gadolinium is so magnetic that it's injected into your bloodstream to light up an MRI—and it was named after a Finnish chemist whose name now sits on the periodic table.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of gadolinium
The word derives from gadolinite, a mineral named after the Finnish chemist and mineralogist Johan Gadolin (1760–1852), who analysed it in the late eighteenth century. When Swiss chemist Jean Charles Galissard de Marignac isolated a new oxide from that mineral in 1880, French chemist Paul-Émile Lecoq de Boisbaudran subsequently obtained the element itself and named it gadolinium in Gadolin's honour. The element was isolated in reasonably pure form shortly thereafter by Paul-Émile Lecoq de Boisbaudran and later refined by others. The suffix '-ium' follows the standard convention for naming metallic elements.
How gadolinium is actually used
A technical scientific term, encountered mainly in chemistry, physics, and medical contexts rather than everyday speech. In medical writing, 'gadolinium' almost always appears in the phrase 'gadolinium-based contrast agent,' and recent safety discussions about gadolinium retention in the body have kept it prominent in radiology literature. As with other elements, the plural is used only when referring to multiple atoms or samples, not as a collective.
Easily confused with gadolinium
Gadolinium is the chemical element itself, whereas gadolinite is a black silicate mineral—named after the same Finnish chemist—from which the element was first isolated.