What does HHD stand for?

Doctor of Honorary Humanities

Doctor of Humanities

H & H Marine, Twenty-nine Palms, CA - Manufacturer code for watercraft hull identification number (USCG)

Headquarters and Headquarters Detachment - Army (AABC)

High Heparin Dose - Medicine (DMAA)

High Holy Days (BJA)

Hogshead

Home Dialysis - Medicine (DMAA)

Home Hemodialysis - Medicine (STED)

Honorary Humanities Doctor (SAUS)

HQ - Headquarters and HQ - Headquarters Detachment - Military technology (DDF)

Hybrid Hard Drive - Type of large buffer computer (XSAL)

Hypertensive Heart Disease - Medicine

Hogshead (SAUS)

Hogshead (ADWA)