MFO

acronym: mixed-function oxidase (enzyme system)
Found on http://cdiac.ornl.gov/pns/acronyms.html#M

MFO

Military Forwarding Organisation
Found on http://www.rhodesianforces.org/Glossary.htm

MFO

Mixed function oxidase
Found on https://sis.nlm.nih.gov/enviro/iupacglossary/annex1.html
No exact match found