-thon
suffix forming nouns
indicating a large-scale event or operation of a specified kind
⇒
telethon
Origin
C20: on the pattern of marathon☞ -athon
-thonvariant of -athon, used after vowels, as in telethon.
1954 Amer. Speech XXIX. 229The word moviethon is merely the most recent in what promises to be a long list of words created arbitrarily by means of the -thon suffix.
1963 R. I. McDavid Mencken'sAmer. Lang. 228Rockerthon, poolathon and pianothon appeared in Canada in 1955.
-thon
Suffix
- Alternative form of -athon