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View synonyms for pi

# pi

^{1}

[ pahy ]

## noun

,

*plural***pis.**- the 16th letter of the Greek alphabet (Π, π).
- the consonant sound represented by this letter.
*Mathematics.*- the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter.
- the ratio itself: 3.141592+.

pi

^{2}

or

**pie**[ pahy ]

## noun

,

*plural***pies.**- printing types mixed together indiscriminately.
- any confused mixture; jumble.

## verb (used with object)

,

**pied,****pi·ing.**- to reduce (printing types) to a state of confusion.
- to jumble.

PI

^{3}

*Law.*personal injury.- principal investigator.

Pi.

^{4}

or

**pi.**## abbreviation for

- piaster.

P.I.

^{5}

## abbreviation for

- Philippine Islands.

pi

^{1}

/ paɪ /

## noun

- a jumbled pile of printer's type
- a jumbled mixture

## verb

- to spill and mix (set type) indiscriminately
- to mix up

PI

^{2}

## abbreviation for

- Philippine Islands
- private investigator

pi

^{3}

/ paɪ /

## noun

- the 16th letter in the Greek alphabet (Π, π), a consonant, transliterated as
*p* - maths a transcendental number, fundamental to mathematics, that is the ratio of the circumference of a circle to its diameter. Approximate value: 3.141 592…; symbol: π

pi

/ pī /

- An irrational number that has a numerical value of 3.14159265358979… and is represented by the symbol π. It expresses the ratio of the circumference to the diameter of a circle and appears in many mathematical expressions.

pi

- The irrational number obtained by dividing the length of the diameter of a circle into its circumference . Pi is approximately 3.1416. The sign for pi is π.

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## Word History and Origins

Origin of pi^{1}

First recorded in 1835–45; from

*Greek**pî, peî,*used in mathematics to represent*Greek**periphérion*periphery ( def )Origin of pi^{2}

First recorded in 1650–60; origin uncertain

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## Word History and Origins

Origin of pi^{1}

C17: of uncertain origin

Origin of pi^{2}

C18 (mathematical use): representing the first letter of Greek

*periphereia*peripheryAdvertisement

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