evaluator

from WordNet (r) 3.0 (2006)

evaluator
    n 1: an authority who is able to estimate worth or quality [syn:
         {evaluator}, {judge}]

from The Collaborative International Dictionary of English v.0.48

evaluator \evaluator\ n.
   an authority who is able to estimate worth or quality; an
   appraiser.

   Syn: judge; appraiser.
        [WordNet 1.5]

from The Free On-line Dictionary of Computing (8 July 2008)

evaluator

   <theory> Geoff Burn defines evaluators E0, E1, E2 and E3 which
   when applied to an expression, reduce it to varying degrees.
   E0 does no evaluation, E1 it evaluates to {weak head normal
   form} (WHNF), E2 evaluates the structure of a list, i.e. it
   evaluates it either to NIL or evaluates it to a CONS and then
   applies E2 to the second argument of the CONS.  E3 evaluates
   the structure of a list and evaluates each element of the list
   to {WHNF}.  This concept can be extended to data structures
   other than lists and forms the basis of the {evaluation
   transformer} style of {strictness analysis}.

   (1994-12-12)