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First name origin & meaning:

Arabic: Lion

First name variations: Haider, Haydar, Hyder

Last name origin & meaning:

Muslim: from a personal name based on Arabic haidar ‘lion’. This was an epithet of ‛Alī ibn Abi ̣Talib, fourth of the ‘rightly guided’ khalifs (ruled 656–61), the first imam of the Shiite Muslims.