Principal Investigator POGO - Partnership for Observation of the Global Oceans PPARC - Particle Physics & Astronomy Research Council PPE - Personal Protective Equipment PRC - Programme Review Committee PRG - Peer Review Group PSD - Physical Sciences Division : pi

Principle Investigator Person responsible of a research project : pi

someone who can be employed as a detective to collect information : pi

the ratio of the circumference to the diameter of a circle : pi

The letter &PI;, π, as used to denote the number or quotient approximately expressing the ratio of the circumference of a circle to its diameter; also, the quotient or the ratio itself : pi

The value of the quotient pi, to eight decimal places, is 3 : pi

The quotient pi cannot be expressed as a root of an algebraic equation; and from this fact follows the impossibility of the quadrature of the circle by purely algebraic processes, or by the aid of a ruler and compass : pi