potentially hazardous object

noun

A near-Earth asteroid or comet with an orbit such that it has the potential to make close approaches to the Earth and is of a size large enough to cause significant regional damage in the event of impact.

Meanings

nounpotentially hazardous object (plural potentially hazardous objects)

plural potentially hazardous objects · alternative initialism PHO

  1. astronomyA near-Earth asteroid or comet with an orbit such that it has the potential to make close approaches to the Earth and is of a size large enough to cause significant regional damage in the event of impact.
Cite this entry
APA

potentially hazardous object. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/potentially%20hazardous%20object

MLA

“potentially hazardous object.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/potentially%20hazardous%20object. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “potentially hazardous object,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/potentially%20hazardous%20object.

Source: potentially hazardous object on Wiktionary, CC BY-SA 4.0.