What does HAP stand for?

Hafnium Column Product - Nuclear energy (NRCH)

Hampshire Aircraft Parks - British military (DMA)

Handicapped Aid Program (DAVI)

Happy

Happy Bay - Australia - Airport symbol (OAG)

Hardware Allocation Panel

Harpoon Industries, Cedar Hill, MO - Manufacturer code for watercraft hull identification number (USCG)

Harwood Academic Publishers - British

Hauptli - NCIC firearms make code (NCIC)

Hazard Abatement Program (SAUO)

Hazardous Air Pollutant

Heading Axis Perturbation

Health Access Project (SAUS)

Health Alliance Plan

Heat Shock Activator Protein - Biochemistry

Height Above Plate - Roofing

Held After Positioning (STED)

Helicopter Assault Primary (SAUS)

Heredopathia Atactica Polyneuritiformis - Medicine

High-Acid Column Product (NRCH)

High-Altitude Platform

High-Altitude Probe (AAG)

High Altitude Program (ALAC)

High-Amplitude Peristalsis (STED)

High Average Power (SAUS)

High-Speed Arithmetic Processor

Hilson Adolescent Profile - Psychology (DHP)

Histamine Acid Phosphate (STED)

Histamine Phosphate Acid - Biochemistry (DAVI)

Home Attendant Program (SAUS)

Home Owners Assistance Program - Military (AABC)

Honeycomb Aluminum Panel

Honeywell Array Processor (SAUS)

Hook-Associated Protein - Genetics

Horizontal Axis Pivot

Hospital Acquired Pneumonia - Medicine (STED)

Hospital and Healthsystem Association of Pennsylvania (EARSL)

Host Access Protocol (ACAE)

Host-Associated Population - Ecology

Housing Assistance Payment (SAUO)

Housing Assistance Program

Human Activity Profile (IDYL)

Humoral Antibody Production - Medicine (DMAA)

Huntingtin-Associated Protein - Biochemistry

Hupla - Language code (ETLW)

Hutch Apparel Ltd. - Vancouver Stock Exchange symbol

Hydrated Antimony Pentaoxide - Inorganic chemistry

Hydrated Antimony Pentoxide (ALPHA)

Hydraulic Actuator Package (ACAE)

Hydrogen Ammonium Percolate, fuel (SAUS)

Hydrolyzed Animal Protein - Food technology

Hydroxyacetophenone - Organic chemistry

Hydroxyapatite - Also, HA - A mineral

Hydroxylamine Perchlorate - Organic chemistry

Hydroxylammonium Perchlorate (SAUS)

Hydroxylated Ammonium Perchlorate (ACAE)

Hyperboloid Approximation Procedure

Hyperpolarizing Afterpotential - Electrophysiology

Whitsunday Resort (Long Island) - Australia - Airport symbol