51Թ

Advertisement

Advertisement

View synonyms for

pi

1

[pahy]

noun

plural

pis 

  1. the 16th letter of the Greek alphabet (Π, π).

  2. the consonant sound represented by this letter.

  3. Mathematics.

    1. the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter.

    2. the ratio itself: 3.141592+.

pi

2
Or pie

[pahy]

noun

plural

pies 

  1. printing types mixed together indiscriminately.

  2. any confused mixture; jumble.

verb (used with object)

pied, piing 

  1. to reduce (printing types) to a state of confusion.

  2. to jumble.

PI

3

  1. Law.personal injury.

  2. principal investigator.

  3. Also P.I., p.i. private investigator.

Pi.

4
Or pi.

abbreviation

  1. piaster.

P.I.

5

abbreviation

  1. Philippine Islands.

  2. Also PI, p.i. private investigator.

pi

1

/ 貹ɪ /

noun

  1. the 16th letter in the Greek alphabet (Π, π), a consonant, transliterated as p

  2. maths a transcendental number, fundamental to mathematics, that is the ratio of the circumference of a circle to its diameter. Approximate value: 3.141592…; symbol: π

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

pi

2

/ 貹ɪ /

noun

  1. a jumbled pile of printer's type

  2. a jumbled mixture

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to spill and mix (set type) indiscriminately

  2. to mix up

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

pi

3

/ 貹ɪ /

adjective

  1. slangshort for pious pious

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

PI

4

abbreviation

  1. Philippine Islands

  2. private investigator

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

pi

  1. 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

  1. 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.

Discover More

51Թ History and Origins

Origin of pi1

First recorded in 1835–45; from Greek pî, peî, used in mathematics to represent Greek éDz periphery ( def. )

Origin of pi2

First recorded in 1650–60; origin uncertain
Discover More

51Թ History and Origins

Origin of pi1

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

Origin of pi2

C17: of uncertain origin
Discover More

Example Sentences

Examples have not been reviewed.

Classical computers have managed the calculation for molecules as large as pentacene, a chain of five hydrocarbon rings with 22 electrons in “pi” covalent bonds, which govern the molecule’s shape and reactivity.

From

Most numbers don’t have names, but pi does.

From

Today, using sophisticated computers, researchers have come up with trillions of digits for pi, but there is no end.

From

The nerdy holiday, observed on March 14 because the first three digits of pi are 3, 1 and 4, has been recognized by the U.S.

From

For example, pi times the radius squared, find the area of a circle to calculate pressures on hydraulic cylinders.

From

Advertisement

Related 51Թs

Advertisement

Advertisement

Advertisement

PHzPia

Browse

  • #
  • aa
  • bb
  • cc
  • dd
  • ee
  • ff
  • gg
  • hh
  • ii
  • jj
  • kk
  • ll
  • mm
  • nn
  • oo
  • pp
  • qq
  • rr
  • ss
  • tt
  • uu
  • vv
  • ww
  • xx
  • yy
  • zz