English · Slang Attested

QSO

In real, traceable use. Part of the curated seed collection; community review is coming.

Meaning · English

To communicate (with) by means of amateur radio.

Where it’s used: Used American English

The basic award is issued when 500 countries have been successfully QSOed on the three bands.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “QSO” mean?

To communicate (with) by means of amateur radio.

Is “QSO” formal or informal?

QSO is generally slang.

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