Bible Dictionaries
Rabboni

Vine's Expository Dictionary of NT Words

1: ῥαββουνί

(Strong's #4462 — Noun Masculine — rabbounei | rabboni — hrab-bon-ee', hrab-boo-nee' )

formed in a similar way to the above, was an Aramaic form of a title almost entirely applied to the president of the Sanhedrin, if such was a descendant of Hillel. It was even more respectful than Rabbi, and signified "My great master;" in its use in the NT the pronominal force of the suffix is apparently retained (contrast Rabbi above); it is found in Mark 10:51 in the best texts, RV, "Rabboni" (AV, "Lord"), addressed to Christ by blind Bartimaeus, and in John 20:16 by Mary Magdalene, where it is interpreted by didaskalos, "Master" (marg., "Teacher").

Bibliography Information
Vines, W. E., M. A. Entry for 'Rabboni'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/​dictionaries/​eng/​ved/​r/rabboni.html. 1940.