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.

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.

Source: Webster's Revised Unabridged Dictionary (1913)