EnglishEdit

NounEdit

PSO (plural PSOs)

  1. Initialism of public safety officer.
  2. (Australia) Initialism of protective services officer.
  3. Initialism of protostellar object.
  4. Initialism of penalty shootout.

Related termsEdit

(protostellar object):

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

AnagramsEdit