During the middle ages, "c" was sometimes used before "i" instead of "t".
This reflects the way the two letters were approaching each other in sound
before front vowels. (Imagine a "ts" sound.) Using "c" would definitely
make the word look like later Latin.
--
SPBurris at Cornell University
Greek, Latin and bagpipes!
Ed Menes
However, in modern times, I have never seen the phrase spelled other than
"conditio sine qua non", and this alternative spelling dates from classical
times as well. But I agree that the etymologically justified spelling is
"condicio".
Daan Sandee san...@think.com
Burlington, MA
As for *conditio* being a Classical spelling for the word in this meaning,
I'd have to see it on a stone. Manuscripts show all kinds of Medieval
spellings in transcribing Classical works (and words). The word spelled
*conditio* meant `condiment, food preservative', but the spelling of both
words in modern editions of Classical authors is determined more by
scholarly opinion than by the letter of the manuscripts.
Ed Menes