[1] : The Collaborative International Dictionary of English v.0.48

sabbatic \sabbat"ic\, sabbatical \sabbat"ical\, a. gr. ?:
   cf. f. sabbatique.
   of or pertaining to the sabbath; resembling the sabbath;
   enjoying or bringing an intermission of labor.
   1913 webster

   sabbatical year jewish antiq., every seventh year, in
      which the israelites were commanded to suffer their fields
      and vineyards to rest, or lie without tillage.
      1913 webster
see also:
sabbatical year 

[2] : WordNet (r) 2.0

sabbatical
     adj 1: of or relating to the sabbath; "friday is a sabbatical day
            for muslims" syn: sabbatic
     2: of or relating to sabbatical leave; "sabbatical research
        project"
     n : a leave usually taken every seventh year syn: sabbatical
         leave
see also:
sabbatic sabbatical leave 

[3] : Moby Thesaurus II by Grady Ward, 1.0

18 moby thesaurus words for "sabbatical":
   comfortable, festal, furlough, holiday, leave, leave of absence,
   liberty, paid holiday, paid vacation, quiet, restful,
   sabbatical leave, sabbatical year, shore leave, time off, vacation,
   vacational, weekend

Sabbatical >> S Words
Sabbatical, definition of term: Sabbatical
sabbatical_pag1.html