P

1. Symbol for peta-; phosphorus; proline; product; poise; power; frequently with subscripts indicating location and/or chemical species. 2. Followed by a subscript, 1) refers to the plasma concentration of the substance indicated by the subscript; 2) permeability constant. 3. A blood group designation. See P blood group, Blood Groups appendix. 4. Symbol for probability; when followed by the sign for “less than” (<), this indicates that a test statistic, e.g., a chi-square test, gives a result unlikely to occur by chance.

1. In nucleic acid terminology, symbol for phosphoric residue. 2. Symbol for pressure; partial pressure.

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an electrocardiographic wave corresponding to a wave of depolarization crossing the atria; by weight [Lat. pondere]; father [Lat. pater]; near [Lat. proximum]; near point [Lat. punctum proximum]; pain; parietal electrode placement in electroencephalography; parity; part; partial pressure; Pasteurella; paternal; patient; penicillin; penta- [1015]; percent; percussion; perforation; permeability; peta-; pharmacopeia; phenophthalein; phenylalanine; phosphate group; phosphorus; physiology; pig; pint; placebo; plan; plasma; Plasmodium; Pneumocystis; point; poise; poison, poisoning; polarity; polarization; pole; polymyxin; pons; population; porcelain; porcine; porphyrin; position; positive; posterior; postpartum; power; precipitin; precursor; prednisone; premolar; presbyopia; pressure; primary; primipara; probability; product; progesterone; prolactin; proline; promoter; properdin; propionate; protein; Proteus; proximal; Pseudomonas; psychiatry; pulmonary; pulse; pupil; radiant power; significance probability [value]; simple programmable [pacemaker]; sound power; weight [Lat. pondus]

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P abbr

1) parental

2) part

3) percentile

4) pharmacopoeia

5) pint

6) pole

7) population

8) position

9) positive

10) posterior

11) pressure

12) pulse

13) pupil

P symbol phosphorus

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para; peta-; phosphate (group); phosphorus; poise; posterior; premolar; proline; pupil.