[TUHS] etymology of cron

[Doug McIlroy]

I had never doubted that "cron" was a contraction of "chrono-".
Wikipedia, however, offered several folk acronyms on a par
with it. Brian asked Ken, who confirmed,

"cron comes from the prefix (greek?) for time.
it should have been chron, but i never could spell."

I edited Wikipedia to expunge the nonsense. Amusingly that
makes the article less "verifiable" because there had been
literature citations for the nonsense, but there is none
for the fact.

Doug