I've not realized that not only is it the pan-answer, it's also the giveaway clue. This is how you can tell the internet startup you're supporting was founded by a Yankee. The checkout screen looks like this:
As always, thank you, Chela, for sharing your verbal musings about verbal matters. Are you taking any more language/linguistics courses these days?
syllabus (n.)1650s, "table of contents of a series of lectures, etc.," from Late Latin syllabus "list," ultimately a misreading of Greek sittybos "parchment label, table of contents," of unknown origin. The misprint appeared in a 15c. edition of Cicero's "Ad Atticum" (see OED). Had it been a real word, the proper plural would be syllabi.