pi

Pi is the 16th letter of the Greek alphabet, or the numerical value of the ratio of the circumference of a circle to its diameter.

(noun)

See pi in Webster's New World College Dictionary

noun pl. pies

Origin: see pie

transitive verb pied, pieing or piing

to make jumbled; mix up (type)

noun

the sixteenth letter of the Greek alphabet (Π, π)
1. the symbol (π) designating the ratio of the circumference of a circle to its diameter
2. the ratio itself, equal to 3.14159265+: often approximated as

Origin: Gr pi, earlier pei < Sem, as in Heb pē

private investigator

See pi in American Heritage Dictionary 4

noun

also (pē) The 16th letter of the Greek alphabet. See Table at alphabet.
Mathematics A transcendental number, approximately 3.14159, represented by the symbol π, that expresses the ratio of the circumference to the diameter of a circle and appears as a constant in many mathematical expressions.

Origin:

Origin: Late Greek pī

Origin: , from Greek pei

Origin: , of Phoenician origin; see p in Semitic roots

also pie

noun pl. pis also pies

An amount of type that has been jumbled or thrown together at random.

verb pied pied (pīd) also pied, pi·ing also pie·ing, pies pies also pies

verb, transitive

To jumble or mix up (type).

verb, intransitive

To become jumbled.