
1) Catholic ecclesiastical title
Found on
https://www.crosswordclues.com/clue/peritus

Latin, meaning: skilled, expert.
Found on
http://archives.nd.edu/ppp.htm

Peritus (Latin for `expert`) is the title given to Roman Catholic theologians who are present to give advice at an ecumenical council. At the most recent council, the Second Vatican Council, some periti (the plural form) accompanied individual bishops or groups of bishops from various countries. Others were formally appointed as advisers to the .....
Found on
http://en.wikipedia.org/wiki/Peritus

An expert. In the tribunal context, the term usually refers to any person who, in virtue of professional training, offers specialized, testimony to the tribunal or who is called upon by the tribunal to offer advice in the interpretation of the acts. The term is most frequently used in reference to a psychiatrist, psychologist or other professionall...
Found on
http://www.canonlawcentre.com/glossary-of-canonical-terms/

skilled, expert.
Found on
https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
No exact match found.