P is the sixteenth letter of the English Alphabet, and a labial articulation formed by a close compression of the anterior part of the lips, as in ep. It is convertible into b and f, sometimes into v.

This letter is found int he oriental languages, from which it was received into the Greek and Latin; except however the Arabic, which has not this letter, and the Arabians cannot easily pronounce it. In some words which we have borrowed from the Greek, p is mute, as in psalm, ptisan; but is not silent in English words, unless it may be in receipt, and a few irregular words. p aspirated or followed by h, represents the Greek, which answers to the English f, as in philosophy.

As an abbreviation, p stands for Publius, pondo, etc. p adjective DIG for patricia dignitas; p C. for Patres Conscripti; p F. for Publius Fabius; p P. for propositum publice; p R. for populus Romanus; p R.S. for praetoris sententia; p R.S.P. for praeses provinciae.

P.M. stands for post meridiem, afternoon.

As a numeral, p like G, stands for one hundred, and with a dash over it, for four hundred thousand.

Among physicians, p Stands for pugil, or the eighth part of a handful; p AE. For partes aequales, equal parts of the ingredients; p P. for pulvis patrum, or the Jesuits bark in powder; and ppt. For praeparatus, prepared.