noun, plural pis.
- the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter.
- the ratio itself: 3.141592+.
Origin of pi1
Definition for pi (2 of 5)
noun, plural pies.
verb (used with object), pied, pi·ing.
Origin of pi2
Definition for pi (3 of 5)
Definition for pi (4 of 5)
Definition for pi (5 of 5)
Examples from the Web for pi
In Pi, a numbers theorist named Max Cohen decides to put a power drill through his own brain.‘Noah’ Review: An Ambitious, Flawed Biblical Tale That You Have to See|Andrew Romano|March 28, 2014|DAILY BEAST
They included Yann Martel, author of Life of Pi, and Calvin Trillin.
Life of Pi immediately became the odds-on favorite to win, with more bets placed on it than any other Booker nominee ever.
She was Richard Parker in Life of Pi, a tiger who confusingly talked, and with an Indian accent, to boot.MTV Movie Awards 2013 Best Moments: Rebel Wilson & More (VIDEO)|Kevin Fallon|April 15, 2013|DAILY BEAST
PE, like fe, is another Hebrew letter, tho Greek and math people prefer their PI better.National Scrabble Day: A Poem So You’ll Know All 101 Two-Letter Words|David Bukszpan|April 13, 2013|DAILY BEAST
They do say that he was talking to Miss Walker about one of the faculty pews, and he said: 'Do you occupew this pi?'Molly Brown's Sophomore Days|Nell Speed
Now Pi Hsi has raised the standard of rebellion in Chung-mou.The Sayings of Confucius|Confucius
The office of the Eagle was in pi and its editor non est, which means nowhere—terrible excitement!
And even Snooks, who had never been able to 112 gratify his dearest ambition of becoming a Pi Eta, felt their sting.Harry Watson's High School Days|Frank V. Webster
Lastly are to be inserted the particles Al and Pi; which were in use among the antient Egyptians.
British Dictionary definitions for pi (1 of 4)
noun plural pis
Word Origin for pi
British Dictionary definitions for pi (2 of 4)
noun plural pies
verb pies, piing, pied, pies, pieing or pied (tr)
Word Origin for pi
British Dictionary definitions for pi (3 of 4)
British Dictionary definitions for pi (4 of 4)
Word Origin and History for pi
Greek letter, from Hebrew, literally "little mouth." As the name of the mathematical constant, from 1841 in English, used in Latin 1748 by Swiss mathematician Leonhart Euler (1707-1783), as an abbreviation of Greek periphereia "periphery." For the meaning "printer's term for mixed type," see pie (3).