Health impact assessment
Hearing Industries Association
hemagglutination inhibition assay
Herzberg Institute for Astrophysics
Hold in Abeyance
Holographic Imaging Apparatus
Canadian Eagle Aviation
Hawaiian Irrigation Authority
Health Information Administrator
Health Information Alliance
Health Information Architecture
Health Insurance Associate
heat infusion agar
Held in Abeyance
hemagglutination inhibition antibody
Hepatic intra-arterial
Herzberg Institute of Astrophysics
high intensity area
High-Intensity Atomizer
Highlights in Astronomy
Highlights of Astronomy
Hogskolen I Alesund
Horological Institute of America
Host Interface Adapter
Housing Industry Association
Human Interface Architecture
human intestinal absorption
Hydrogen-Induced Amorphization
Hydrologic Investigations Atlas
hydrophilic acids