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Definition of pi
(Entry 1 of 5)
pi
noun (2)
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Definition of pi (Entry 2 of 5)
pi
verbDefinition of pi (Entry 3 of 5)
pi
adjectiveDefinition of pi (Entry 4 of 5)
PI
abbreviationDefinition of PI (Entry 5 of 5)
Learn More About pi
From the Editors at Merriam-Webster
Going Greek: 7 Words from the Greek...
Going Greek: 7 Words from the Greek Alphabet
When English borrows from another alphabet
Words of the Week: March 13, 2016
Words of the Week: March 13, 2016
Holidays and Politics (still) drove people to the dictionary
Trending: Pi
Trending: Pi
Never talk to pi. He'll go on forever.
Statistics for pi
Cite this Entry
“Pi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pi. Accessed 27 May. 2022.
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More Definitions for pi
pi
noun
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Kids Definition of pi
P&I
abbreviationLegal Definition of P&I
(Entry 1 of 2)
PI
abbreviationLegal Definition of PI (Entry 2 of 2)
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Time Traveler for pi
The first known use of pi was in the 15th century
See more words from the same century