What does PADI stand for?

What does PADI mean?

PADI	Professional Association Of Diving Instructors Business » Professional Organizations
PADI	Preserving Access To Digital Information Miscellaneous » Unclassified
PADI	Patches Arrive During Instruction Computing » Assembly
PADI	Poverty Analysis And Data Initiative Miscellaneous » Unclassified
PADI	The Professional Association Of Diving Instrutors Business » Professional Organizations
PADI	Professional Assocation Of Diving Instructors Miscellaneous » Unclassified
PADI	Put Another Dollar In Business » General