HegiraPronunciation: /ˈhɛdʒɪrə/ (also Hejira or Hijra)Definition of Hegira noun Muhammad’s departure from Mecca to Medina in ad 622, marking the consolidation of the first Muslim community. the Muslim era reckoned from Muhammad’s departure from Mecca:the second century of the Hegira (hegira) an exodus or migration. Origin:via medieval Latin from Arabic hijra 'departure', from hajara 'emigrate'Hegira in other Oxford dictionaries Definition of Hegira in the US English dictionary