barium
a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite. Symbol: Ba; atomic weight: 137.34; atomic number: 56; specific gravity: 3.5 at 20°C.
Origin of barium
1Words Nearby barium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use barium in a sentence
It was an early prototype of a high-temperature-superconducting wire, made from yttrium barium copper oxide materials.
A hole in the ground could be the future of fusion power | James Temple | February 23, 2022 | MIT Technology ReviewHis case hinged on evidence that his hands tested positive for gunshot residue — microscopic particles of lead, barium and other metals discharged during gunfire.
With 12 men exonerated, the force behind Maryland’s Innocence Project hangs it up | Tim Prudente | June 3, 2021 | Washington PostThe results of the experiments were puzzling at first, but when Hahn and Strassmann reported to Meitner that barium, a much lighter element than uranium, was a product of the reaction, it became clear what was happening.
How matter’s hidden complexity unleashed the power of nuclear physics | Emily Conover | April 8, 2021 | Science NewsThose wells contained mercury, boron, calcium, sulfate and barium — all of which are potential indicators of coal ash contaminants.
A Power Company’s Quiet Land-Buying Spree Could Shield It From Coal Ash Cleanup Costs | by Max Blau for Georgia Health News | November 24, 2020 | ProPublicabarium and sodium salts were made by neutralizing the acid, and were purified by crystallization.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron) | William Anderson Syme
It was then evaporated to a small bulk, neutralized with barium carbonate and extracted with ether.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron) | William Anderson SymeThe excess of lead was removed by sulphuric acid, and the sulphuric acid was removed by barium carbonate.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron) | William Anderson SymeBy warming with alkalies or barium hydroxide, rhamnose is colored yellow.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron) | William Anderson SymeThe described change in ionization can be roughly followed with the aid of an insoluble sulphate like barium sulphate.
The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2. | Julius Stieglitz
British Dictionary definitions for barium
/ (ˈbɛərɪəm) /
a soft silvery-white metallic element of the alkaline earth group. It is used in bearing alloys and compounds are used as pigments. Symbol: Ba; atomic no: 56; atomic wt: 137.327; valency: 2; relative density: 3.5; melting pt: 729°C; boiling pt: 1805°C
Origin of barium
1Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for barium
[ bâr′ē-əm ]
A soft, silvery-white metallic element of the alkaline-earth group. It occurs only in combination with other elements, especially in barite. Barium compounds are used in x-raying the digestive system and in making fireworks and white pigments. Atomic number 56; atomic weight 137.33; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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