In reading Daniel Block's commentary on Ezekiel, I have come across the word sufformative. (Block uses it of the Hebrew masculine singular ending -em.) I have searched all around but cannot find a definition. Searching on Google is instructive in that it reveals that the word seems to be used primary in the context of the study of ancient Hebrew and Greek. I have had trouble before finding definitions for words used by Biblical linguists; they seem to have their own set of vocabulary.
Obviously, in a general way it indicates some sort of formation at the end of a word. I also have the sense that this is somewhat different than the meaning of suffix, though I am not clear enough on the definition of the word to express this difference. What is the meaning of sufformative? Is it different from suffix, and if so, how? Examples (in whatever language) would also be appreciated.
(I've chosen to ask this rather than on English.SE because this word seems to be used only by linguists.)