Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-signs-signals-9bc0171c8779

What does the Morse abbreviation OM mean between operators?

Old man, a friendly term for the other operator.

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Why: OM is a common abbreviation meaning old man, used to refer to the other operator.

Huh, didn't know that: OM is a common abbreviation meaning old man, used to refer to the other operator.

The dad joke
OM stands for old man, no kidding.
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References

Answer: Old man, a friendly term for the other operator. OM is a common abbreviation meaning old man, used to refer to the other operator.

  1. Morse code en.wikipedia.org/wiki/Morse_code
    The abbreviations OM (old man), YL (young lady)
    Checked 2026-11-07.

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