mehdi ne demek?

"Mehdi" is a name of Arabic origin meaning "guided one" or "rightly guided." Because of this meaning, it has significant religious connotations, particularly within Islam. There's no single "Mehdi" to describe; the name is used in various contexts:

The Mahdi in Islam: This is the most widely known reference to the name. In Shia Islam, the Mahdi is believed to be a descendant of the Prophet Muhammad who will return to earth to fill the world with justice and righteousness before the Day of Judgment. Sunni Islam also believes in a Mahdi, but the specifics of his arrival and role are less clearly defined than in Shia belief. Many different interpretations and expectations exist within both branches of Islam.
A common name: Outside of its religious context, Mehdi is a popular given name among Muslim communities worldwide. Many individuals named Mehdi have no connection to the religious figure.

To give you more specific information, I need clarification. Are you interested in:

The Mahdi (religious figure): If so, please specify Shia or Sunni perspective, as beliefs differ significantly.
A specific person named Mehdi: If you have someone in mind, please provide more details.
The general meaning and usage of the name: I've already addressed this above.

Please clarify your request so I can provide a more helpful response.