1. The migration of the Prophet Muhammad from Mecca to Medina in 622 CE, marking the beginning of the Islamic calendar.
Usage: capitalized when referring to the historical event; also spelled hegira or hejira
2. In Islamic tradition, a migration or journey undertaken for religious reasons, especially to escape persecution or to seek a better Islamic community.
Usage: lowercase when used generically

Examples

• The Hijrah in 622 CE is considered the most important event in early Islamic history.
• Muslims mark the beginning of their calendar from the year of the Hijrah.
• The Prophet's hijrah from Mecca to Medina established the first Islamic community.
• Many early Muslims undertook their own hijrah to escape religious persecution.
• The concept of hijrah emphasizes the importance of seeking safety and religious freedom in Islam.