What do they call a non-magical wizard born child?

There isn't a universally recognized term for a non-magical wizard born child. This is because the concept of "magical" and "non-magical" children within the wizarding world varies greatly across different fictional universes.

Here are some possibilities depending on the specific fictional world:

In the Harry Potter universe:

* Squib: This is the official term for a wizard born child who has no magical abilities.

In other fictional universes:

* Mundane: This term could be used to describe someone with no magical abilities, regardless of their lineage.

* Normal: This term could be used to distinguish someone with no magical abilities from those who do.

* Non-magical: This is a general term that simply means someone without magic.

Ultimately, the term used to describe a non-magical wizard born child depends on the specific fictional universe and its established terminology.