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., The meaning of P is the 16th letter of the English alphabet. How to use p in a sentence., Any of the speech sounds that this letter represents, as, in English, the (p) of peace., Discover everything about the word "P" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide., P, p meaning: 1. the 16th letter of the English alphabet 2. written abbreviation for parking, used especially on…. Learn more., P 16th letter of the English alphabet and a letter employed in the alphabets of other w European languages. It is a consonant and descends from the Semitic letter pe, a word meaning “mouth”..