Definition of telethon in English:

telethon

Syllabification: tel·e·thon
Pronunciation: /ˈteləˌTHän
 
/

noun

  • A very long television program, typically one broadcast to raise money for a charity.
    More example sentences
    • Earlier this month, Johnny was among a galaxy of stars who manned the phones at a televised tsunami telethon to raise money for victims of the Asian disaster..
    • The telethon was to raise money for the people in need, to give them food where they had none, to put pharmaceuticals on their pharmacy shelves.
    • It is not yet known how much money was raised by the telethon but early predictions suggest it could be over £70 million.

Origin

1940s (originally US): from tele- 'at a distance' + -thon on the pattern of marathon.

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