P3

P3 is a designation that appears in multiple, unrelated domains. It does not refer to a single entity but to several notable concepts and objects.

In popular culture, P3 commonly refers to Persona 3, a 2006 role-playing game developed by Atlus for the PlayStation 2. The game blends school-life simulation with dungeon crawling and follows a group of students who awaken to fight creatures called Shadows. It spawned remakes and enhanced editions, including Persona 3 FES (2007) and Persona 3 Portable (2012), and remains a touchstone of the Persona franchise.

In aviation, P-3 refers to the Lockheed P-3 Orion, a four-engine turboprop maritime patrol aircraft introduced in the early 1960s for anti-submarine warfare. The aircraft served with the United States Navy and many allied operators, in roles such as reconnaissance and search-and-rescue, with later variants including P-3B, P-3C, and international upgrades.

In color management and digital imaging, Display P3 is a wide-gamut color space defined for consumer devices. Based on the DCI-P3 primaries with a D65-like white point, it supports a broader range of colors than sRGB and is used by modern displays and software to reproduce vibrant imagery.

In medicine and pharmacology, P3 is commonly shorthand for Phase 3 clinical trials, the late-stage studies that test efficacy and monitor adverse effects in larger patient populations. Successful Phase 3 results are typically required for regulatory approval and market access.

In mathematics, P3 (often written as P^3) denotes projective 3-space, the three-dimensional projective space arising from the study of lines through the origin in four-dimensional space. It is a fundamental construct in algebraic geometry and computer graphics, providing a framework for describing geometric relations independent of scale.