P

P (Latin Capital Letter P, U+0050) is a fundamental character in the Basic Latin script, serving as the sixteenth letter of the English alphabet and many other languages worldwide. Visually, it consists of a vertical stem with a closed, semi-circular loop extending from the top right. Its primary purpose is to represent the voiceless bilabial plosive sound, as heard at the beginning of "pen" or "potato." Historically, the letter 'P' evolved from the Greek letter Rho (Ρ), which itself derived from the Phoenician letter Pe (𐤐), likely depicting a mouth. Over time, the tail of the Greek Rho shortened and the loop closed to form the distinct Latin 'P'. It frequently appears in abbreviations, initialisms, and scientific notations (e.g., 'P' for phosphorus or pressure), and its lowercase counterpart is 'p' (U+0070).