PSO
noun
PSO is spelled P-S-O: 3 letters. It appears about once in every 4 million words in written English, the 62,894th most frequent word form (wordfreq, 2021 data). As a noun, PSO means “Initialism of public safety officer” (English Wiktionary, September 2026). The plural of PSO is PSOs or PsOs.
How many letters and syllables are in PSO?
| Letters | 3: P-S-O |
|---|---|
| In writing | about once in every 4 million words; the 62,894th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is PSO?
PSO appears about once in every 4 million words in written English, the 62,894th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Forms of PSO
- PSOs plural
- PsOs plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does PSO mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Initialism of public safety officer.
- 2
AustraliaInitialism of protective services officer.
- 3
Initialism of penalty shootout.
- 4
Initialism of protostellar object.
- 5
Abbreviation of psoriasis.
- 6
Initialism of pipeline state object.
noun
- 1
Abbreviation of psoriasis.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does PSO come from?
The spelling was probably influenced by PsA (“psoriatic arthritis”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).