Definition of "pentoxide" []

• A compound having five atoms of oxygen combined with another element or radical. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As the phosphoric anhydride, or pentoxide, which is produced when a gas containing phosphorus burns, is a solid body, it may be deposited at the burner jets."
• "For example, vanadium pentoxide (V2O5) is used production of glass and ceramics and as a chemical catalyst."
• "The majority of vanadium pentoxide used in glass manufacturing is imported from South Africa."