he·gi·ra also he·ji·ra (hĭ-jīrə, hĕjər-ə)
1. A flight to escape danger.
2. also Hegira The flight of Muhammad from Mecca to Medina in 622 AD, marking the beginning of the Muslim era.
[Medieval Latin, from Arabic hijra, emigration, flight, from hajara, to depart; see hgr in the Appendix of Semitic roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.