P /(pē)/

P
  1. the sixteenth letter of the English alphabet, is a nonvocal consonant whose form and value come from the Latin, into which language the letter was brought, through the ancient Greek, from the Phœnician, its probable origin being Egyptian. Etymologically P is most closely related to b, f, and v; as hobble, hopple; father, paternal; recipient, receive. See B, F, and M.

Pͅ

n.
  1. The inorganic orthophoshate ion; -- a symbol used in biochemistry. (Chem.) [acronym]