PI

• class I protein;

• first meiotic prophase;

• isoelectric point;

• pacing impulse;

• package insert;

• pain intensity;

• pancreatic insufficiency;

• parainfluenza;

• pars intermedia;

• patient's interest;

• performance indicator or index;

• performance intensity;

• perinatal injury;

• periodontal index;

• permeability index;

• personal injury;

• personality inventory;

• phagocytic index;

• Pharmacopoeia Internationalis;

• phosphatidylinositol;

• physically impaired;

• physiologic index;

• pineal body;

• plaque index;

• plasmin inhibitor;

• pneumatosis intestinalis;

• poison ivy;

• ponderal index;

• postictal immobility;

• postinfection;

• postin-fluenza;

• postinjury;

• postinoculation;

• preinduction [examination];

• premature infant;

• prematurity index;

• preparatory interval;

• prescribing information;

• present illness;

• primary infarction;

• primary infection;

• principal investigator;

• processor interface;

• product information;

• proinsulin;

• prolactin inhibitor;

• propidium iodide;

• proportional plus integral;

• protamine insulin;

• protease inhibitor;

• proximal intestine;

• pulmonary incompetence;

• pulmonary index;

• pulmonary infarction;

• pulsatility index

• inspiratory pressure