In a message dated 1/13/06 11:22:20 AM, laurence.horn at YALE.EDU writes: > > I'd go with "exodontist" myself (à la grecque), as in "endodontist", > "periodontist". > > larry > It is my understanding that the aliens have undegone /o—o/ vowel disharmony, in which case the unrounding of the second /o/ is a phonological matter, not an etymological one.