English edit

Noun edit

PSO (plural PSOs)

  1. Initialism of public safety officer.
  2. (Australia) Initialism of protective services officer.
  3. (Pakistan) Abbreviation of Pakistan State Oil.
  4. Initialism of protostellar object.
  5. Initialism of penalty shootout.

Related terms edit

(protostellar object):

  • YSO (young stellar object)
  • SSO (substellar object)
  • QSO (quasistellar object)

Anagrams edit