: a silvery malleable fusible chiefly trivalent metallic element that occurs especially in sphalerite ores and is used especially as a plating material, in alloys, and in electronics see Chemical Elements Table
Examples of indium in a Sentence
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Prinano said its technology supports wafer-level production of photonic chips and can be applied to optical communication and sensing devices based on gallium arsenide, indium phosphide, and silicon photonics.
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Neetika Walter, Interesting Engineering, 11 June 2026
Copper: An Economic and Strategic Imperative At full production, Resolution could yield more than 40 billion pounds of copper over decades, along with critical co-products including molybdenum, silver, tellurium, indium, and bismuth.
—David Blackmon, Forbes.com, 31 May 2026
Among its discoveries are a massive underground trove of nickel and palladium on Australia’s east coast, and a deposit of indium, a rare-earth metal critical for AI semiconductors, also in Australia.
—New Atlas, 8 May 2026
Vector Photonics has developed PCSELs made of indium phosphide and indium gallium arsenide phosphide that a commercial fab could reproduce and manufacture reliably.
—IEEE Spectrum, 7 May 2026
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Neetika Walter, Interesting Engineering, 11 June 2026
Copper: An Economic and Strategic Imperative At full production, Resolution could yield more than 40 billion pounds of copper over decades, along with critical co-products including molybdenum, silver, tellurium, indium, and bismuth.
—David Blackmon, Forbes.com, 31 May 2026
Among its discoveries are a massive underground trove of nickel and palladium on Australia’s east coast, and a deposit of indium, a rare-earth metal critical for AI semiconductors, also in Australia.
—New Atlas, 8 May 2026
Vector Photonics has developed PCSELs made of indium phosphide and indium gallium arsenide phosphide that a commercial fab could reproduce and manufacture reliably.
—IEEE Spectrum, 7 May 2026
See All Example Sentences for indium
Cite this Entry
“Indium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indium. Accessed 18 Jun. 2026.
Copy CitationMedical Definition
indium
noun
in·di·um
ˈin-dē-əm 
: a malleable fusible silvery metallic element that is chiefly trivalent, occurs especially in sphalerite ores, and is used as a plating for bearings, in alloys having a low melting point, and in making transistors
—symbol In
see Chemical Elements Table
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