P, or p, is the sixteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide., The meaning of P is the 16th letter of the English alphabet. How to use p in a sentence., P, sixteenth letter of the modern alphabet. Throughout its known history it has represented the unvoiced labial stop. It corresponds to the Semitic ‘pe,’ which perhaps derives from an earlier sign for ‘mouth.’ The Greeks renamed this form ‘pi.’ The English initial p is slightly aspirated., P is the sixteenth letter of the English alphabet. 2. p is an abbreviation for pence or penny. They cost 5p each., p (lower case, upper case P) The ordinal number sixteenth, derived from this letter of the English alphabet, called pee and written in the Latin script., .