Abbreviations beginning with A

ATDMAutomated Telephone Disease Management
Medical » Diseases

ATDMActive Transportation and Demand Management
Miscellaneous » Automotive

ATDMAdapted Triple Driven Methodology
Miscellaneous » Unclassified

ATDMAtmospheric Transport and Dispersion Model
Miscellaneous » Unclassified

ATDMAustralian Truck Drivers Memorial
Miscellaneous » Automotive

ATDNAmazon Tree Diversity Network
Academic & Science » Botany

ATDNAmazon Tree Diversity Network (network for data and information sharing on tree diversity in the Amazon)
Academic & Science

ATDNAdult Training and Development Network
Community » Educational

ATDNAOL Transit Data Network
Computing » Networking

ATDNAdvanced Technology Demonstration Network (Darpa)
Governmental

ATDNAIDS Treatment Data Network
Medical

ATDNAdult Training and Development Network (Capitol Region Education Council; Connecticut)
Miscellaneous

ATDNAIDS Treatment Data Network (est. 1988; New York, NY)
Miscellaneous

ATDNAny Time Day or Night
Miscellaneous

ATDNAustralian Tissue Donation Network
Regional » Australian

ATDNSHINCAny Time Day and Night, Sundays and Holidays INCluded
Business » General

ATDNSSHINCAny Time Day or Night Sundays and Holidays Included
Internet » Chat

ATDOAssociation of Track Day Organisers
Miscellaneous » Automotive

ATDPAcademic Talent Development Program
Academic & Science