sabbatical leavesabbatical leave
The professor took a sabbatical leave over the summer to volunteer at the archaeological dig site.
Sabbatical leave is defined as a time period in which a person does not report to his regular job but who remains employed with that company.
An example of sabbatical leave is when an archeology professor takes a semester off to go on a dig.
a period of paid leave from work given periodically for study, travel, etc., originally given to college faculty members so as to allow for independant research, writing, etc.