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pentoxide

[pen-tok-sahyd] /pɛnˈtɒk saɪd/
noun, Chemistry
1.
an oxide containing five atoms of oxygen, as phosphorus pentoxide, P 2 O 5 .
Origin
1860-1865
1860-65; pent- + oxide
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pent oxide

pentoxide

/pɛntˈɒksaɪd/
noun
1.
an oxide of an element with five atoms of oxygen per molecule
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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