/ səˈbætɪkl; NAmE / noun
[ C , U ] a period of time when sb, especially a teacher at a university, is allowed to stop their normal work in order to study or travel :
to take a year's sabbatical
a sabbatical term / year
He's on sabbatical .
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WORD ORIGIN
late 16th cent.: via late Latin from Greek sabbatikos of the sabbath + -al .