* Nickname: A shortened form of a longer name like "Federica" or "Alessia".
* Foreign Name: A name of foreign origin, perhaps Turkish or Arabic, where it might have a different meaning.
* Made-up name: Sometimes people choose names that are not officially recognized in any language.
To understand the meaning of "Seda," you need more context:
* Origin of the name: Where did you encounter this name?
* Context: Was it used in a specific situation?
Once you provide more information, I can help you find a possible meaning.