What is the prefix for criteria?

There isn't a single, widely used prefix for "criteria". "Criteria" itself is a plural noun, meaning "standards by which something is judged."

Here are some options depending on what you want to convey:

General:

* Criterial: This is the most common adjective form of "criteria", meaning "relating to criteria."

* Criterion-based: This emphasizes the use of criteria.

More specific:

* Multi-criteria: Used when there are multiple criteria.

* Single-criterion: Used when there is only one criterion.

* Pre-criteria: Used to describe something that comes before the criteria are established.

* Post-criteria: Used to describe something that happens after the criteria are applied.

The best option depends on the specific context.