Re: "role" vs. "r\^ole"

Steve Vickers writes:

Returning to category theory, and topos theory in particular, I can't resist also quoting his guidance on Latin plurals (which surely must apply even more to Greek): "All that can be safely said [regarding whether to prefer or avoid the Latin form] is that there is a tendency to abandon the Latin plurals, and that, when one is really in doubt which to use, the English form should be given the preference."

Having looked at both a few authorities and some publications outside of category theory where the word is used, I am curious if there is any field other than category theory where the plural of topos is not topoi? -- Bob -- Robert L. Knighten RLK@knighten.org