PSO

English

Noun

PSO (plural PSOs)

  1. Public safety officer.
  2. (Australia) Protective services officer.
  3. Protostellar object (or proto-stellar object).

(protostellar object):

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

Anagrams
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