quaeritor wrote:There is a slight difference there in that "deity" is an English word (albeit derived from Latin) and given only the pronunciation dee-ity in Chambers (and in the rather small school-level Oxford which is all I have to hand), - so "day-ity" is simply wrong
I'm afraid this is down to the fact that Catholicism wasn't really a mainstream British religion until the days of Basil Hume, and the compilers of Chambers and OED simply didn't know how Catholics pronounced it. They do (or should do) now, since there was an extensive correspondence on precisely this point (the two divergent pronunciations) in the columns of The Times, no less, in the mid-1970s. The fact that quaeritor even knew that "day-ity" was an alternative simply proves that it was out there in Catholic circles and s/he had encountered it, thus providing further evidence that this is in fact the correct pronunciation for Catholics.
(Who said I couldn't be just as obsessive as quaeritor?!)