pi
noun (1)
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Definition of pi
(Entry 1 of 5)
1 : the 16th letter of the Greek alphabet — see Alphabet Table
2a : the symbol π denoting the ratio of the circumference of a circle to its diameter
b : the ratio itself : a transcendental number having a value rounded to eight decimal places of 3.14159265
pi
noun (2)
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Definition of pi (Entry 2 of 5)
1 : type that is spilled or mixed
2 : a pi character or matrix
pi
verbDefinition of pi (Entry 3 of 5)
: to spill or throw (type or type matter) into disorder
: to become pied
pi
adjectiveDefinition of pi (Entry 4 of 5)
1 : not intended to appear in final printing pi lines
2 : capable of being inserted only by hand pi characters
PI
abbreviationDefinition of PI (Entry 5 of 5)
1 Philippine Islands
2 private investigator
3 programmed instruction
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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
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Time Traveler for pi
The first known use of pi was in the 15th century
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More Definitions for pi
pi
noun
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Kids Definition of pi
1 : the symbol π representing the ratio of the circumference of a circle to its diameter
2 : the ratio itself having a value of about 3.1416
P&I
abbreviationLegal Definition of P&I
(Entry 1 of 2)
principal and interest
PI
abbreviationLegal Definition of PI (Entry 2 of 2)
private investigator
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