PA

• panic attack;

• pantothenic acid;

• paralysis agitans;

• paranoia;

• parathion;

• passive aggressive;

• pathology;

• patient's advocate;

• peak amplitude;

• performance assessment;

• periarteritis;

• peridural artery;

• periodic acid;

• periodontal abscess;

• pernicious anemia;

• perpetual asymmetry;

• phakic-aphakic;

• phenylalkylamine;

• phosphatidic acid;

• phenylalanine;

• phosphoarginine;

• photoallergy;

• phthalic anhydride;

• physical abuse;

• physical activity;

• physician advisor;

• physician assistant;

• pituitary-adrenal;

• plasma adsorption;

• plasma aldosterone;

• plasminogen activator;

• platelet adhesiveness;

• platelet aggregation;

• platelet-associated;

• plicatic acid;

• polyamine;

• polyarteritis;

• polyarthritis;

• post-aural;

• posteroanterior;

• prealbumin;

• preadipocyte;

• preamplifier;

• predictive accuracy;

• pregnancyassociated;

• presents again;

• pressure augmentation [respiration];

• primary aldosteronism;

• primary amenorrhea;

• primary anemia;

• prior to admission;

• proactivator;

• proanthocyanidin;

• procainamide;

• professional association;

• prolonged action;

• propionic acid;

• prostate antigen;

• protective antigen;

• proteolytic action;

• prothrombin activity;

• protrusio acetabuli;

• pseudoaneurysm;

• Pseudomonas aeruginosa;

• psychoanalysis;

• psychogenic aspermia;

• pulmonary arterial [pressure];

• pulmonary artery;

• pulmonary atresia;

• pulpoaxial;

• puromycin aminonucleoside;

• pyruvic acid;

• pyrrolizidine alkaloid;

• yearly [Lat. per annum]

• alveolar pressure;

• atrial pressure;

• paternal allele;

• partial pressure of arterial fluid

P(A)

• probability of event A