The Collaborative International Dictionary of English v.0.48:

Assess \As*sess"\, v. t. [imp. & p. p. Assessed; p. pr. & vb.
   n. Assessing.] [OF. assesser to regulate, settle, LL.
   assessare to value for taxation, fr. L. assidere, supine as
   if assessum, to sit by, esp. of judges in a court, in LL. to
   assess, tax. Cf. Assize, v., Cess.]
   1. To value; to make a valuation or official estimate of for
      the purpose of taxation.
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   2. To apportion a sum to be paid by (a person, a community,
      or an estate), in the nature of a tax, fine, etc.; to
      impose a tax upon (a person, an estate, or an income)
      according to a rate or apportionment.
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   3. To determine and impose a tax or fine upon (a person,
      community, estate, or income); to tax; as, the club
      assessed each member twenty-five cents.
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   4. To fix or determine the rate or amount of.
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            This sum is assessed and raised upon individuals by
            commissioners in the act.             --Blackstone.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "assessed":
   ad valorem, admeasured, appraised, evaluated, gauged, good for,
   known by measurement, mapped, measured, metered, plotted, priced,
   prized, pro rata, quantified, quantized, rated, surveyed,
   triangulated, valuated, valued, valued at, worth