American Heritage® Dictionary of the English Language, Fourth Edition
- n. A lustrous, grayish-white, strong, ductile metallic element obtained primarily from zircon and used chiefly in ceramic and refractory compounds, as an alloying agent, and in nuclear reactors as a highly corrosion-resistant alloy. Atomic number 40; atomic weight 91.22; melting point 1,852°C; boiling point 4,377°C; specific gravity 6.56 (20°C); valence 2, 3, 4. See Table at element.
Century Dictionary and Cyclopedia
- n. Chemical symbol, Zr; atomic weight, 89.6. The metal contained in zirconia. It is commonly obtained in the form of a black powder, but is also known in the crystalline state, forming highly lustrous blackish-gray laminæ, having a specific gravity of 4.15. The amorphous metal takes fire when gently heated in the air, but the crystalline variety requires an intense heat for its ignition. The common acids do not attack it. Zirconium is a remarkable element in that it is very widely and generally diffused in nature, but nowhere, so far as is known, found in any one locality in large quantity; in this respect it has a decided resemblance to titanium. The form in which it occurs is that of the silicate (zircon), and usually in minute or even microscopic crystals, which have been detected in many granitic and syenitic rocks, as well as in various gneisses and crystalline schists. Zircon has been found also, but less abundantly, in some eruptive rocks, both ancient and modern. Zirconium is chemically most closely related to titanium, and both these metals have certain affinities with silicon, forming dioxids and volatile tetrachlorids, as does that non-metallic element.
- n. a metallic chemical element (symbol Zr) with an atomic number of 40.
GNU Webster's 1913
- n. (Chem.) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
- n. a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon
- From a New Latin coinage, from zircon. (Wiktionary)
“It isn't quite what I want though, because the disintegrating rays which the ring discharge gives out break down the zirconium, which isn't an end-product of radioactivity.”
“The zirconium is a dual-use metal used for the production of nuclear reactor pipes.”
“Thus, top-ranking Bulgarian officials are said to have committed document fraud and other crimes with regard to "the transfer and the very likely sale" of 10 tons of zirconium, which is a dual-use metal.”
“The most efficient piezoelectric material known is PZT, a compound of lead, zirconium, and titanium.”
“The highest concentration of fission products are contained within the zirconium cladding.”
“The fuel rods must be removed, not when all the fission fuel has been used up, but far earlier, when the zirconium begins to crack from the exposure to radiation, threatening to release radioactive gasses building up in the core.”
“The fuel is uranium oxide, 97% of which is U-238 and 3% U-235 useful for making bombs, which is encased in zirconium tubes.”
“If the rods are partially or fully uncovered, at around 1000 degrees steam interacts with the zirconium cladding to form hydrogen.”
“The gas is a product of the breakdown of zirconium cladding that encases fuel rods.”
“If the core heats up enough, the zirconium cladding around the core causes the water to release hydrogen.”
These user-created lists contain the word ‘zirconium’.
Arabic loanwords in English are words acquired directly from Arabic or else indirectly by passing from Arabic into other languages and then into English. Most entered one or more of the Romance lan...
includes words of the "Prodcom list"
A list of chemical elements
From the story by Jules Verne.
Looking for tweets for zirconium.