In Science what does abbreviation FWAU mean?

"FWAU" is not a standard scientific abbreviation. It is possible that it is a specific abbreviation used within a particular field or research group.

To figure out what it means, you would need more context. For example:

* Where did you see this abbreviation? Was it in a research paper, a textbook, a presentation, or somewhere else?

* What was the context? What was the surrounding text talking about?

If you can provide more context, I might be able to help you decipher the meaning of "FWAU."