How to Use pi in a Sentence

pi

noun
  • The eyeball makes its sheep host stamp out two of pi’s digits.
    — Noel Murray, Vulture, 17 Sep. 2025
  • Here are a few ways pi is being used on the cutting edge of science.
    — ABC News, 14 Mar. 2026
  • Each pi formula traces a different path across the grid.
    — Lyndie Chiou, Scientific American, 13 Mar. 2026
  • Though the math behind the method is nothing new, the idea to use it to estimate pi with coin flips is.
    — Emma R. Hasson, Scientific American, 12 Mar. 2026
  • What are the most interesting ways pi comes up in your work or everyday life?
    — Lyndie Chiou, Scientific American, 13 Mar. 2026
  • What are the most interesting ways pi comes up in your work or everyday life?
    — Emma R. Hasson, Scientific American, 12 Mar. 2026
  • Science What is pi—and why is there an entire day devoted to it?
    — Magazine, 15 Mar. 2023
  • Once again the chain will be baking the pi symbol in its apple pie crust for the occasion.
    — Fielding Buck, Oc Register, 11 Mar. 2026
  • Numbers rarely make headlines, but pi has a habit of doing exactly that.
    — Rupendra Brahambhatt, Interesting Engineering, 15 Mar. 2026
  • Anyone can download the software for free, and many have used it to find new pi formulas to join the heap.
    — Lyndie Chiou, Scientific American, 13 Mar. 2026
  • Neither pi nor Pi Day has anything to do with pie, but most people don’t like math.
    — Amy Drew Thompson, orlandosentinel.com, 12 Mar. 2021
  • But the applications of pi are endless and part of every corner of our world.
    — ABC News, 14 Mar. 2026
  • How far into π (pi) can modern machines calculate?
    — Rupendra Brahambhatt, Interesting Engineering, 15 Mar. 2026
  • If any computer program can be implemented in the game, then so can one that outputs the value of pi.
    — Manon Bischoff, Scientific American, 25 May 2026
  • One woman who has the symbol tattooed on her neck comes every year and marches near the front with a pi flag, Sharkland said.
    — ABC News, 14 Mar. 2026
  • Venus is volcanically alive, stunning new find shows What is pi—and why is there an entire day devoted to it?
    — Magazine, 16 Mar. 2023
  • Anything that is round or has cyclical or repeating properties — such as radio waves — involves pi.
    — ABC News, 14 Mar. 2026
  • The area of a unit circle is pi, as Newton well knew, so when x=1, the area under the curve is a quarter of the unit circle, .
    — Steven Strogatz, Quanta Magazine, 31 Aug. 2022
  • Irrational numbers such as pi or the square root of 2 have always fascinated humankind.
    — Manon Bischoff, Scientific American, 19 June 2026
  • Then scientists use pi once more when receiving and breaking down complex signals that are being beamed back to Earth.
    — ABC News, 14 Mar. 2026
  • The concept of pi has been around for about 4,000 years when it was used by ancient Babylonians.
    — Taylor Wilson, USA TODAY, 14 Mar. 2022
  • There is no experiment in the history of humanity that will conjure pi.
    — Mike Errico, Smithsonian Magazine, 23 Sep. 2022
  • The Eyeball’s best moment so far this season was when the twerpy CEO was quizzing it on the next three numbers of pi.
    — Brian Moylan, Vulture, 22 Sep. 2025
  • The real gag is catching the rare spectacle of drunk Sheldon, who burps the number of pi and throws up on the clown decorations in the bathroom.
    — Shay Spence, PEOPLE, 26 Nov. 2025
  • This flag features the symbol for the infinite number pi in gold, which represents the infinite number of partners people who are polyamorous can have.
    — Kiersten Willis, ajc, 8 June 2022
  • Here are some examples from the physical and biological worlds where pi helps explain natural forms.
    — Encyclopedia Britannica, 9 Mar. 2026
  • The geometry of these shapes depends only on radius (r), which introduces pi into their description.
    — Encyclopedia Britannica, 9 Mar. 2026
  • Given his history of calculating pi in creative and curious ways on his channel, Parker didn’t have to think long.
    — Emma R. Hasson, Scientific American, 26 June 2025
  • But sometimes the circle is cleverly hidden, and sometimes the reason pi pops up is a mathematical mystery!
    — Emma R. Hasson, Scientific American, 12 Mar. 2026
  • But he is also credited with the invention of a screw water pump — still used in power plants today — and a means of approximating pi, among many other things.
    — Tom Chivers, semafor.com, 13 Mar. 2026

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'pi.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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