What does ADA stand for?

What does ADA mean?

ADA	Aviation Data and Analysis System Governmental » Transportation
ADA	Americans with Disabilities Act Governmental » Transportation
ADA	Acadian Mining Corporation Business » Toronto Stock Exchange
ADA	Automated Degree Audit Academic & Science » Universities
ADA	Athletes Demand Action Academic & Science » Universities
ADA	American Dairy Association Academic & Science » Universities
ADA	A Dumb Answer Academic & Science » Universities
ADA	Americans with Disabilities Act Governmental » US Government
ADA	Advance Deposit Account Miscellaneous » USPS