Pi /(pī)/

1. A mass of type confusedly mixed or unsorted. (Print.)

imp. & p. p. Pied; p. pr. & vb. n. Pieing

1. To put into a mixed and disordered condition, as type; to mix and disarrange the type of; as, to pi a form. (Print.)

1. A Greek letter (Π, π) corresponding to the Roman letter P.
2. The letter π, 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. The value of the quotient pi, to eight decimal places, is 3.14159265. The number pi is an irrational number, i.e. it cannot be expressed as the quotient of two integers. It is also a transcendental number, i.e. it cannot be expressed as a root of an algebraic equation with a finite number of terms; 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. (Math.)

1. A little more; as, più allegro, a little more briskly. (Mus.)