What does CHAD stand for?

Amos, PQ - AM radio station call letters

Chamber of Deputies - Telegraphy (PCTE)

Change Display - Utility

Change of Address - Direct marketing (WDMC)

Charleston Army Depot - South Carolina - Closed (AABC)

Chateauroux Air Depot (SAUO)

Code to Handle Angular Data (IEEE)

Combined Health Agencies Drive (ACAE)

Consolidated Human Activity Database (GDD)

Cyclophosphamide, Adriamycin, Cisplatin Hexamethylmelamire - Antineoplastic drug regimen (DAVI)

Cyclophosphamide, Hexamethylmelamine, Adriamycin, Diamminedichloroplatinum - Cisplatin - Antineoplastic drug regimen