PHO may refer to:
  • Primary Health Organisation
    Primary Health Organisation
    Primary Health Organisations , in New Zealand, are health care providers that are funded on a capitation basis by the New Zealand Government via District Health Boards...

  • Potentially hazardous object
    Potentially Hazardous Object
    A potentially hazardous object is an asteroid or comet with an orbit such that it has the potential to make close approaches to the Earth and a size large enough to cause significant regional damage in the event of impact....

    , an asteroid or comet that could potentially collide with Earth
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.