What does PHA stand for?

Arterial pH - Hydrogen ion concentration - Medicine (DAVI)

Baheng Bunu - Language code (ETLW)

Chicago, IL - Location identifier - FAA (FAAL)

Pachena Industries Ltd. - Vancouver Stock Exchange symbol

Pacific Pharmaceuticals - AMEX symbol - Formerly, Xytronyx, Inc. (SPSG)

Palomino Horse Association (EA)

Parallel Half Adder (SAUS)

Parts per Hundred of Asphalt - Chemical technology

Passive Hemagglutination - Immunology

Peak Horizontal Acceleration

Peripheral Hyperalimentation (Solution) - Medicine

Persohn/Hann Associates, Inc. - Commercial firm

Peruvian Heart Association (EA)

Phantom - NCIC car model code

Pharmacia - Company symbol

Phaseolus Vulgaris - Plant lectins (QSUL)

Phenylalanine - Medicine (MEDA)

Philadelphia - Telegraphy (PCTE)

Phoenix Airport, AZ - Amtrak Busline code

Physics and Astronomy (SAUS)

Phytohemagglutinin - Immunology

Phytohemagglutinin Antigen - A skin test for cellular based immunity (DAVI)

Polomino Horse Association (SAUS)

Polyhydroxyalkanoate - Organic chemistry

Poly(hydroxystearic Acid) - Organic chemistry

Port Health Authority (SAUS)

Port Heiden - Alaska - Seismograph station code, US Geological Survey - Closed (SEIS)

Potentially Hazardous Asteroids

Poultry Husbandry Adviser - Ministry of Agriculture, Fisheries, and Food - British

Preferred Hotels Association - Also known as Preferred Hotel Worldwide (EA)

Prelaunch Hazard Area (MUGU)

Preliminary Hazard Analyses (NASA)

Preliminary Hazard Analysis - A gross study of the initial system concepts

Preliminary Hazards Analysis - A report documents

Preliminary Hazards Assessment - Environmental science (COE)

Primary Human Amnion - Biology (BARN)

Pritikin Health Association of Australia

Process Hazard Analysis - Environmental science

Process Hazards Analysis - Chemical engineering

Professional Hairdressers' Association - Australia

Professional Handlers Association (EA)

Professional Horsemen's Association of America (EA)

Programmable Host Access - Computer science (IAA)

Pseudohypoaldosteronism - Medicine

Public Health Act (DAS)

Public Health Agency (DMAA)

Public Housing Administration - or HHFA; disbanded 1965

Public Housing Agency - Department of Housing and Urban Development (GFGA)

Pulmonary Hypertension Association (NRGU)

Pulse Height Analysis - Spectroscopy

Pulse Height Analyzed

Pulse Height Analyzer

State Library of Pennsylvania, Harrisburg, PA - OCLC symbol (OCLC)

Philadelpia Park, PA - North American horse racing tracks (HRTC)