Here's what we can deduce:
* Possible origins: It could be a variation of "Kreider", which could stem from a place name or a profession.
* Possible meanings: It could relate to "Kreide" (chalk) or "Kreidezeit" (Cretaceous period), but this is speculative.
To determine the meaning, you'd need more context:
* Family history: Is there any known history of the Kreider family, its origin, or any associated professions?
* Regional variation: Where is the surname most prevalent? This could point to specific local meanings or origins.
Without further information, it's difficult to pinpoint the exact meaning of "Kreider."