sab·bat·i·cal 
(sə-bătĭ-kəl) also sab·bat·ic (-ĭk)
(sə-bătĭ-kəl) also sab·bat·ic (-ĭk)adj.
1. Relating to a sabbatical year.
2. Sabbatical also Sabbatic Relating or appropriate to the Sabbath as the day of rest.
n.
A sabbatical year.
[From Late Latin sabbaticus, from Greek sabbatikos, from sabbaton, Sabbath; see SABBATH.]