What does abbreviator mean?
The definition of abbreviator
Ab*bre”vi*a`tor, n.
Etym: [LL.: cf. F. abbréviateur.]

1 One who abbreviates or shortens.
2 One of a college of seventy-two officers of the papal court whose duty is to make a short minute of a decision on a petition, or reply of the pope to a letter, and afterwards expand the minute into official form.