1. A leave of absence from one's regular work responsibilities, usually with pay, for research, rest, or recreation. Many university professors are granted a sabbatical every seventh year.
2. often Sabbatical year A year during which land remains fallow, observed every seven years by Jewish farmers in Israel.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.