Etymology

radiothon

R1A1D2I1O1T1H4O1N1

Today it means: An extended charity appeal on the radio Full definition →

English radio
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The story

  1. Englishradiotelegraphyclip.
  2. Englishradio
  3. English todayradiothon

From radio + -thon.

Etymology from Wiktionary, CC BY-SA 4.0.