There's no standard academic degree known as an "MFD". It's possible you've encountered an abbreviation used within a specific field or institution. To help me understand what you're looking for, could you provide more context? For example:
* Where did you see this abbreviation? (e.g., a job posting, a university website, a document)
* What is the subject area or field? (e.g., finance, medicine, engineering)
With more information, I can give you a more accurate answer.