Egad. Several thoughts, all/most of which are probably wrong. First, that there may be some misspelling anywhere, though teritoepeist first leapt to mind. Second, I wonder if knowing the pronunciation would help, in looking up roots? Is it TERRihto..., tuhREEto..., terrihTOPee-est, tuhreetoEPPee-est?
I also wondered if, like Rego Park (Helen, sorry, but I've forgotten what you told me the Re and go stand for) in that the groupings of letters might stand for the beginnings of other word, as in that the 'te' could be telepathy or telepathic; in which case it is not likely that we will know what the rest could be. And, didn't it say somewhere that the guy was German? I think the most likely explanation is that there was some "science" back then that is not accepted as such today, like phrenology.