1911 Encyclopædia Britannica, Volume 22… (1911)
“ Otherwise all Tannaites (see Tanna) , the scholars of the Mishnah period, were distinguished by the title of “rabbi.” The Jehuda I. mentioned above, the redactor of the Mishnah, was honoured as the “Rabbi” κατ’ ἐξοχήν (“par excellence”) , and in the tradition of the houses of learning, if it was necessary to speak of him or to cite his opinions and utterances, he was simply referred to as “Rabbi,” without the mention of any name. Scholars who were not definitely ordained—and among these were men of high distinction-were simply mentioned by their names without the Rabbi-title. ”
