English Words Starting With O

• ozonize

  verbverb-intransitiveverb-transitiveC2 (Very Low Frequency)
  /ˈəʊ.zə.naɪz/To convert oxygen into ozone or to treat something with ozone.
• ozonizer

  nounC2/Technical
  /ˈəʊ.zə.naɪ.zə/A device or apparatus that produces ozone.
• ozonolysis

  nounVery low (specialist term)
  /ˌəʊzəˈnɒlɪsɪs/A chemical reaction in which ozone (O₃) cleaves carbon-carbon double or triple bonds in organic compounds, forming carbonyl compounds.
• ozonosphere

  nounLow
  /ˈəʊ.zə.nəʊ.sfɪə/A layer of Earth's atmosphere containing a high concentration of ozone molecules, located within the stratosphere.
• ozostomia

  nounVery Rare / Technical
  /ˌəʊzəʊˈstəʊmɪə/Foul-smelling breath; halitosis.
• ozzie

  nounC1
  /ˈɒz.i/A male given name, often a diminutive or familiar form of the name Oswald, Oscar, or Osmond. In modern contexts, a common nickname for an Australian person.
• oˈcclusive

  adjectivenounLow
  /əˈkluː.sɪv/A sound produced by a complete blockage of airflow in the vocal tract, such as /p/, /b/, /t/, /k/.

Showing 3181–3187 of 3187 words.