Definitions of pi
The word "pi" uses 2 letters: ip.
n. - A Greek letter (/, /) corresponding to the Roman letter P. 2
n. - Specif.: (Math.) The letter /, /, 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. The value of the quotient pi, to eight decimal places, is 3.14159265. 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. 2
Words formed by adding one letter before or after pi (in bold), or to ip in any order: