from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A soft, malleable, silvery-white metallic element found primarily in ores of zinc and tin, used as a plating over silver in making mirrors, in plating aircraft bearings, and in compounds for making transistors. Atomic number 49; atomic weight 114.82; melting point 156.61°C; boiling point 2,080°C; specific gravity 7.31; valence 1, 2, 3. See Table at element.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A metallic chemical element (symbol In) with an atomic number of 49.

from the GNU version of the Collaborative International Dictionary of English

  • n. A rare metallic element, of atomic number 49, discovered in certain ores of zinc, by means of its characteristic spectrum of two indigo blue lines; hence, its name. In appearance it resembles zinc, being white or lead gray, soft, malleable and easily fusible, but in its chemical relation it resembles aluminium or gallium (valence +3). Symbol In. Atomic weight, 114.82.

from The Century Dictionary and Cyclopedia

  • n. Chemical symbol, In; atomic weight, 113.7. A rare metallic element found in the zinc-blende of Freiberg, Saxony, and some other localities, and discovered by means of the spectroscope: so called from its giving a blue line in the spectrum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a rare soft silvery metallic element; occurs in small quantities in sphalerite


from The American Heritage® Dictionary of the English Language, 4th Edition

ind(igo) + -ium (so called from the indigo-blue lines in its spectrum).

from Wiktionary, Creative Commons Attribution/Share-Alike License

From ind(igo) + -ium, from the indigo lines in its spectrum


  • The researchers say that forming the cement into thin membranes would make it nearly transparent, making it an ideal substitute material for rare metals such as indium, which is used in plasma and liquid-crystal displays.

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  • The same goes for many other rare metals such as indium, which is being consumed in unprecedented quantities for making LCDs for flat-screen TVs, and the tantalum needed to make compact electronic devices like cellphones. . .

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  • As cracks formed in the anode, they tore open the plastic shells, releasing the contents within: a material called indium gallium arsenide.

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  • Computer simulations designed to investigate the so-called indium/gallium puzzle have highlighted a new way of increasing the efficiency of CIGS thin-film solar cells. - latest science and technology news stories

  • TGR: Back in February you were optimistic about a metal called indium (see Blue Phoenix posting).

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  • Although touted as the future of solar power, those and most other multiple-junction cells owe their performance to the rare metal indium, which is far from abundant.

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  • Currently, a ceramic material called indium tin oxide (ITO) is used in these applications. - latest science and technology news stories

  • CHICAGO, Sept. 11 (UPI) -- U.S. scientists say slightly degrading a semiconductor material called indium antimonide can make magnetic sensors capable of operating at high temperatures.

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  • The key to fabricating the sensors involves slightly diluting samples of a well-known semiconductor material, called indium antimonide, which is valued for its purity.

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  • Intel said the development marks the first time that a silicon-based optical component exceeded the performance of an equivalent device made from more costly conventional materials, such as indium phosphide.

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    December 16, 2007