Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A rare, dense, silvery-white metallic element with a very high melting point, extracted chiefly from molybdenite and used for electrical contacts, with tungsten for high-temperature thermocouples, and as a catalyst for refining hydrocarbon fuels. Atomic number 75; atomic weight 186.2; melting point 3,185°C; boiling point 5,596°C; specific gravity 20.8 (20°C); valence 1, 2, 3, 4, 5, 6, 7. cross-reference: Periodic Table.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A metallic chemical element (symbol Re) with an
atomic number of 75.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Sometimes platinum is combined with a second catalyst (bimetallic catalyst) such as rhenium or another noble metal.
Cracking 2008
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High levels of refractory elements such as rhenium can make the alloys prone to the formation of what are known as deleterious topologically close packed
The Engineer - News 2010
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The metals in question range from the truly rare, such as rhenium, to more abundant but hard-to-process elements such as rare-earth metals, a collective name for 17 minerals used in products like iPhones, the Toyota Prius, vacuum cleaners and energy-efficient light bulbs.
Testing Their Metals Tatyana Shumsky 2011
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The plan builds on the success GE had in paring rhenium from the steel superalloys used in its jet engines and gas turbines.
Testing Their Metals Tatyana Shumsky 2011
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While those steps reduced the company's rhenium use by two-thirds, GE also started a global recycling partnership with other jet-engine makers to further cut the need for new metal.
Testing Their Metals Tatyana Shumsky 2011
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By tweaking the mix of other hardening additives like nickel and molybdenum, which are cheaper and more abundant, GE was able to cut the rhenium content in its jet-engine blades to 3% from 6%.
Testing Their Metals Tatyana Shumsky 2011
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GE says its success with rhenium led the company to examine how it could pare usage of other scarce metals.
Testing Their Metals Tatyana Shumsky 2011
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Seven months later, Rusnano approved 79 million rubles ($2.6 million) in venture funding for Mr. Petrik's project to extract the chemical element rhenium from scrap.
Russian Inventor Has Friends in Kremlin, but Skeptics Outside It Gregory L. White 2010
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Seven months later, Rusnano approved 79 million rubles ($2.6 million) in venture funding for Mr. Petrik's project to extract the chemical element rhenium from scrap.
Russian Inventor Has Friends in Kremlin, but Skeptics Outside It Gregory L. White 2010
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Seven months later, Rusnano approved 79 million rubles ($2.6 million) in venture funding for Mr. Petrik's project to extract the chemical element rhenium from scrap.
Russian Inventor Has Friends in Kremlin, but Skeptics Outside It Gregory L. White 2010
oroboros commented on the word rhenium
Re
December 2, 2007