# pi

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## PI

abbr.
private investigator

## pi 1

(pī)
n.
1. (also pē) The 16th letter of the Greek alphabet. See Table at alphabet.
2. 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.

[Late Greek , from Greek pei, of Phoenician origin; see p in Semitic roots.]

## pi 2

also pie  (pī)Printing
n. pl. pis also pies
An amount of type that has been jumbled or thrown together at random.
v. pied (pīd), pi·ing, pies also pied, pie·ing, pies
v.tr.
To jumble or mix up (type).
v.intr.
To become jumbled.

[Origin unknown.]

## pi

(paɪ)
n, pl pis
1. (Letters of the Alphabet (Foreign)) the 16th letter in the Greek alphabet (Π, π), a consonant, transliterated as p
2. (Mathematics) 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
[C18 (mathematical use): representing the first letter of Greek periphereia periphery]

(paɪ) or

## pie

n, pl pies
1. (Printing, Lithography & Bookbinding) a jumbled pile of printer's type
2. a jumbled mixture
vb (tr) , pies, piing, pied, pies, pieing or pied
3. (Printing, Lithography & Bookbinding) to spill and mix (set type) indiscriminately
4. to mix up
[C17: of uncertain origin]

## pi

(paɪ)
slang Brit short for pious2, pious3

## PI

abbreviation for
1. (Placename) Philippine Islands
2. (Law) private investigator

## pi1

(paɪ)

n., pl. pis.
1. the 16th letter of the Greek alphabet (Π, π).
2.
a. the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter.
b. the ratio itself: 3.14159 +.
[1835–45; < Greek pî, peî; used in math to represent Greek periphérion periphery]

## or pie

(paɪ)

n., pl. pies, n.
1. printing type mixed together indiscriminately.
2. any confused mixture; jumble.
v.t.
3. to jumble (printing type).
4. to mix up; jumble.
[1650–60; orig. uncertain]

## P.I.

Philippine Islands.

## pi

(pī)
An irrational number that has a numerical value of 3.14159265359... and is represented by the symbol π. It expresses the ratio of the circumference to the diameter of a circle and appears as a constant in many mathematical expressions.

## pi

Past participle: pied
Gerund: piing

Imperative
pi
pi
Present
I pi
you pi
he/she/it pies
we pi
you pi
they pi
Preterite
I pied
you pied
he/she/it pied
we pied
you pied
they pied
Present Continuous
I am piing
you are piing
he/she/it is piing
we are piing
you are piing
they are piing
Present Perfect
I have pied
you have pied
he/she/it has pied
we have pied
you have pied
they have pied
Past Continuous
I was piing
you were piing
he/she/it was piing
we were piing
you were piing
they were piing
Past Perfect
Future
I will pi
you will pi
he/she/it will pi
we will pi
you will pi
they will pi
Future Perfect
I will have pied
you will have pied
he/she/it will have pied
we will have pied
you will have pied
they will have pied
Future Continuous
I will be piing
you will be piing
he/she/it will be piing
we will be piing
you will be piing
they will be piing
Present Perfect Continuous
I have been piing
you have been piing
he/she/it has been piing
we have been piing
you have been piing
they have been piing
Future Perfect Continuous
I will have been piing
you will have been piing
he/she/it will have been piing
we will have been piing
you will have been piing
they will have been piing
Past Perfect Continuous
Conditional
I would pi
you would pi
he/she/it would pi
we would pi
you would pi
they would pi
Past Conditional
I would have pied
you would have pied
he/she/it would have pied
we would have pied
you would have pied
they would have pied

## pi

(") Symbol and name representing the ratio of a circle’s circumference to its diameter. Its value is approximately 3.14.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 pi - the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...transcendental number - an irrational number that is not algebraic 2 PI - someone who can be employed as a detective to collect informationdetective - an investigator engaged or employed in obtaining information not easily available to the publichotel detective, house detective, house dick - a private detective employed by a hotel or retail storeinquiry agent - a private detectivestore detective - a private detective employed by a merchant to stop pilferage 3 PI - the scientist in charge of an experiment or research projectprincipal investigatorscientist - a person with advanced knowledge of one or more sciences 4 pi - the 16th letter of the Greek alphabetGreek alphabet - the alphabet used by ancient Greeksalphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters" 5 PI - an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugsprotease inhibitorantiviral, antiviral agent, antiviral drug - any drug that destroys virusesdrug cocktail, HAART, highly active antiretroviral therapy - a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIVCrixivan, indinavir - a protease inhibitor (trade name Crixivan) used for treating HIVnelfinavir, Viracept - a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugsNorvir, ritonavir - a protease inhibitor (trade name Norvir) used in treating HIVInvirase, saquinavir - a weak protease inhibitor (trade name Invirase) used in treating HIV
Translations
erikoismerkkipii
pi
pi

## pi

[paɪ] N (pis (pl)) (Math) → pi f

## PI

abbr of private investigatorPrivatdetektiv(in) m(f)

n (Math) → Pi nt

## pi

[paɪ] n (Math) →
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