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transition metal
noun
: any of various metallic elements (such as chromium, iron, and nickel) that have valence electrons in two shells instead of only one
called also transition element
Examples of transition metal in a Sentence
Recent Examples on the Web
The high-voltage operation leads to issues such as transition metal dissolution, corrosion stress cracking and electrolyte oxidation, which result in poor coulombic efficiency and short cycle life.
—Matthew Dawson, Forbes, 26 Nov. 2024
The ore contains the rare transition metal niobium, which is used in steel production and becomes a superconductor when cooled to low temperatures.
—Lori Youmshajekian, Scientific American, 1 Jan. 2024
In other cases, e-waste might represent a significant supply of a specialized energy transition metal.
—Maddie Stone / Grist, Quartz, 23 Apr. 2024
Materials to replace or work alongside silicon, such as transition metal dichalcogenides, have been the subject of research by scientists for decades.
—Belle Lin, WSJ, 12 Jan. 2024
Some of the new materials include transition metals, which are much more abundant and easier to obtain than iridium, while other promising candidates still contain iridium but as part of a different structure that makes the entire material more reactive than pure iridium.
—IEEE Spectrum, 30 Oct. 2023
Jariwala and colleagues are researching solar cells made of the 2D semiconductors called transition metal dichalcogenides (TMDs), which include materials such as tungsten selenide and molybdenum disulfide.
—IEEE Spectrum, 15 June 2023
And in the subsurface, suddenly transition metals in the middle of the periodic table, like become active for them.
—Jeffery Delviscio, Scientific American, 10 Apr. 2023
MXenes are a large family of nitrides and carbides of transition metals, arranged into two-dimensional layers.
—IEEE Spectrum, 22 Feb. 2023
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Word History
Etymology
from their being transitional between the more highly and the less highly electropositive elements
First Known Use
1929, in the meaning defined above
Dictionary Entries Near transition metal
Cite this Entry
“Transition metal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/transition%20metal. Accessed 23 Dec. 2024.
More from Merriam-Webster on transition metal
Britannica.com: Encyclopedia article about transition metal
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