The meaning of the Acronym PFO is...

PFO is

• Patent Foramen Ovale

More Meanings For PFO:

• Parochialism Fever Outbreak
• Parent Faculty Organisation
• Please F O
• Professional Fuck Off
• Patent Fornum Ovalea
• Parent Faculty Organization
• Patent Foramen Ovale
• Preferred Income Opportunity Fund
• principal federal official
• Parent Facility Organization
• Pre Field Orientation
• Positive Feedback Only
• Personal Freedom Outreach
• Pacific Food Outlook
• Paphos, Cyprus

PFO is also in:

• Airport Codes
• Educational
• FDA
• Hospitals
• Laboratory
• Military
• Non-Profit Organizations
• NYSE Symbols
• Unfiled