Word.ws English Dictionary

QSO

QSO noun: a radio-quiet quasar. Also the initialism of quasi-stellar object.

Noun

QSO (plural QSOs)

  1. (dated) A radio-quiet quasar.

Verb

QSO (third-person singular simple present QSOs, present participle QSOing, simple past and past participle QSOed)

  1. (ambitransitive, slang) To communicate (with) by means of amateur radio.
    • The basic award is issued when 500 countries have been successfully QSOed on the three bands.1993, CQ: The Radio Amateurs' Journal, volume 49, numbers 7-12, page 66

Also used as

QSO is also the initialism of quasi-stellar object.

Forms of QSO

Noun
pluralQSOs
Verb
third-person singular presentQSOs
present participleQSOing
past participleQSOed
pastQSOed

Questions about QSO

What does QSO mean?
QSO means a radio-quiet quasar.
What part of speech is QSO?
QSO can be a noun or a verb.
What is the plural of QSO?
The plural of QSO is QSOs.

Words near QSO in the dictionary

  1. QSL bureau
  2. QSL bureaus
  3. QSL bureaux
  4. QSL card
  5. QSL cards
  6. QSO
  7. QSOed
  8. QSOing
  9. QSOs
  10. qsour
  11. QSQT

Source and license

Adapted from Wiktionary: QSO (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: “QSO.” Word.ws, https://word.ws/qso. Based on Wiktionary, CC BY-SA 4.0.