'Sabbatical' definitions:

Definition of 'sabbatical'

From: WordNet
adjective
Of or relating to the Sabbath; "Friday is a sabbatical day for Muslims" [syn: sabbatical, sabbatic]
adjective
Of or relating to sabbatical leave; "sabbatical research project"
noun
A leave usually taken every seventh year [syn: sabbatical, sabbatical leave]

Definition of 'Sabbatical'

From: GCIDE
  • Sabbatic \Sab*bat"ic\, Sabbatical \Sab*bat"ic*al\, 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]