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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - An oxide containing three atoms of oxygen in the molecule.

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Usage examples (22)
  • The trioxide is a white powder readily dissolved by ammonia.
  • This can be prevented by adding chromium trioxide to the mortar.
  • Arsenic trioxide is used in gold mining to extract the ore from rock.
  • Oxides of sulfur include sulfur dioxide (SO2) and sulfur trioxide (SO3).
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We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.