P

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

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P /P / power; pressure.

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p pico-; proton; the short arm of a chromosome.

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P

The symbol for the element phosphorus.

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The Greek letter pi. Entries beginning with this character are alphabetized under pi.

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The Greek letter phi. Entries beginning with this character are alphabetized under phi.

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The Greek letter psi. Entries beginning with this character are alphabetized under psi.

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P

chemical symbol, phosphorus; symbol, peta-; position; presbyopia; [L.] proximum (near); pulse; [L.] punctum (point); pupil.

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P cells

found in the sinoatrial and atrioventricular nodes. May be a source of electrical impulses.

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p

symbol for (1) the short arm of a chromosome; or (2) the frequency of the more common allele of a pair; (3) pico-.