1. Islam An individual's striving for spiritual self-perfection.
2. Islam A Muslim holy war or spiritual struggle for the propagation or defense of Islam.
3. A campaign against perceived foes, especially such a campaign regarded as fanatical or immoderate: "The war against smoking is turning into a jihad against people who smoke" (Fortune).
[Arabic jihād, from jahada, to strive; see ghd in the Appendix of Semitic roots.]
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