pi Meaning in the Cambridge English Dictionary

Meaning of “pi” in the English Dictionary

"pi" in British English

See all translations


uk   us   /paɪ/ (symbol Π, π)
[U] mathematics, science the ​number (​approximately 3.14) used to ​calculate the ​size of ​circles [C or U] language the 16th ​letter of the ​Greekalphabet
(Definition of pi from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"pi" in American English

See all translations

pinoun [U]

 /pɑɪ/ (symbol π)
geometry a ​number that is the ratio (= ​comparison) of the ​distance around a ​circle to the ​distanceacross the ​circle, ​equal to about 3.14159
(Definition of pi from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “pi”
in Chinese (Simplified) 圆周率…
in Chinese (Traditional) 圓周率…
What is the pronunciation of pi?
Add Cambridge dictionaries to your browser to your website
Word of the Day


to give someone knowledge or to train someone; to instruct

Word of the Day

Out of Africa
Out of Africa
by Colin McIntosh,
October 01, 2015
A recent discovery off the coast of the island of Taiwan, made by local fishermen, is causing scientists to re-examine their ideas about early humans. The skull of a male human, now nicknamed Penghu Man, was found to differ significantly from the skulls of the Homo Erectus species previously known in the

Read More 

dolla noun
dolla noun
September 28, 2015
slang money Can I have some dolla?

Read More