barium oxide
noun
: any oxide of barium
especially
: the monoxide BaO obtained usually as a white to grayish toxic powder by heating barium carbonate or barium sulfate with carbon and used chiefly in making barium hydroxide and barium peroxide, in coating cathodes of electron tubes, and as a drying agent
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“Barium oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/barium%20oxide. Accessed 1 Dec. 2024.
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