graduate +‎ -or


graduator (plural graduators)

  1. One who determines or indicates graduation.
    a graduator of instruments
  2. An instrument for dividing any line, straight or curved, into smaller regular intervals.
  3. An apparatus for diffusing a solution, such as brine or vinegar, over a large surface, for exposure to the air.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.