What is the definition of prefix prima?

The prefix "prima" is not a common prefix in English. It is likely you are thinking of the prefix "prim-", which means "first" or "primary".

Here are some examples:

* Primate: the highest-ranking member of a group, especially a primate.

* Primary: of first importance; main.

* Primordial: existing at or from the beginning of time; primeval.

If you have a specific word in mind that starts with "prima," please provide it and I can help you understand its meaning.