Word.ws English Dictionary

PFO

PFO is the initialism of patent foramen ovale.

PFO is the initialism of pissed.

Meaning of pissed

Adjective

pissed (comparative more pissed, superlative most pissed)

  1. (Australia, Canada, Ireland, UK, colloquial, mildly) Drunk.
    • The waiters would send us up beer onstage as well as food, so now and again we'd end up getting pissed while we were playing.1996, Hunter Davies, The Beatles, page 79
    Synonyms:
    drunk
  2. (Australia, Canada, US, colloquial, mildly, vulgar) Annoyed, angry.
    • That one looks pissed, Ms. Gennero...1987, Jeb Stuart, Steven E. DeSouza, Die Hard, scene 287
    Synonyms:
    pissed off

Forms of PFO

pluralPFOs

Questions about PFO

What is PFO the initialism of?
PFO is the initialism of patent foramen ovale.

Words near PFO in the dictionary

  1. Pflums
  2. PFM
  3. PFML
  4. PFMT
  5. PFNA
  6. PFO
  7. PFOA
  8. PFOF
  9. Pfohl
  10. Pfohls
  11. Pforzheim

Source and license

Adapted from Wiktionary: PFO (page history and authors); pissed (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “PFO.” Word.ws, https://word.ws/pfo. Based on Wiktionary, CC BY-SA 4.0.