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Pi
Definitions
- 1 Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type. not-comparable
"In computing, pi characters may be entered with special key combinations."
- 2 Pious.
"Our Major was "Cherub" Cheeseman, noted for his foul language. I am afraid he lost a tidy little legacy that he was expecting from his aunt, the Dowager Lady Shuttlecock (a very "pi" old lady), through this same habit of his."
- 1 Abbreviation of Piauí: a state of Brazil. abbreviation, alt-of
- 2 A county of Chengdu, Sichuan, China. historical
"Pi County has brought democracy into full play. The peasants there are electing production team leaders and other production team cadres by secret ballot."
- 3 Initialism of Prison Industries, the prison-run work program for inmates. abbreviation, alt-of, initialism
- 4 Initialism of Philippine Islands. Philippines, US, abbreviation, alt-of, dated, historical, initialism
"We're going back to the PI for a vacation this summer."
- 1 The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek. countable, uncountable
- 2 Metal type that has been spilled, mixed together, or disordered. countable, uncountable
- 3 pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch).
- 4 Initialism of processing instruction. abbreviation, alt-of, countable, initialism, uncountable
- 5 an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs wordnet
Show 24 more definitions
- 6 An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265358979323846264338327950; usually written π. countable, uncountable
- 7 Piaster.
- 8 Initialism of partial induction (see AI). abbreviation, alt-of, countable, initialism, uncountable
- 9 the 16th letter of the Greek alphabet wordnet
- 10 Initialism of personal injury. abbreviation, alt-of, countable, initialism, uncountable
- 11 the scientist in charge of an experiment or research project wordnet
- 12 Initialism of politically incorrect (see PC). abbreviation, alt-of, countable, initialism, uncountable
- 13 someone who can be employed as a detective to collect information and assist in criminal investigations wordnet
- 14 Initialism of principal investigator (“lead researcher on a grant-funded project”). abbreviation, alt-of, countable, initialism, uncountable
- 15 the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846 … wordnet
- 16 Initialism of private investigator. abbreviation, alt-of, countable, initialism, uncountable
- 17 Initialism of parallel import. abbreviation, alt-of, countable, initialism, uncountable
- 18 Abbreviation of phosphatidylinositol, a phospholipid component of eukaryotic cell membranes, also abbreviated in PtdIns. abbreviation, alt-of, countable, uncountable
- 19 Initialism of protease inhibitor. abbreviation, alt-of, countable, initialism, uncountable
- 20 Initialism of polyimide. abbreviation, alt-of, countable, initialism, uncountable
- 21 Initialism of ponderal index. abbreviation, alt-of, countable, initialism, uncountable
- 22 Initialism of penile inversion. abbreviation, alt-of, countable, initialism, uncountable
- 23 Initialism of power integrity. abbreviation, alt-of, countable, initialism, uncountable
- 24 Abbreviation of prohibited immigrant. abbreviation, alt-of, countable, uncountable
- 25 Initialism of pseudoincest. abbreviation, alt-of, countable, initialism, uncountable
- 26 Initialism of port injection (“fuel injection”). abbreviation, alt-of, countable, initialism, uncountable
- 27 Initialism of paradoxical intention. abbreviation, alt-of, countable, initialism, uncountable
- 28 Initialism of pro forma invoice. abbreviation, alt-of, countable, initialism, uncountable
- 29 Initialism of People's Initiative. Philippines, abbreviation, alt-of, countable, initialism, uncountable
- 1 To spill or mix printing type.
Etymology
From Koine Greek πῖ (pî), from Ancient Greek πεῖ (peî), ultimately from Proto-Semitic *pay- (“mouth”). Doublet of pe. Its mathematical use apparently stems from its use as the first letter in περιφέρεια (periphéreia, “periphery; circumference”) and was first cited in 1706 in the Synopsis Palmariorum Matheseos by William Jones.
Unclear. Possibly from the Greek letter (see Etymology 1) as a common example of non-alphabetic character, possibly from pica (“type size”) (see Etymology 3), possibly from pie referring to its mixed nature or pied (“checkered, multicoloured”).
Unclear. Possibly from the Greek letter (see Etymology 1) as a common example of non-alphabetic character, possibly from pica (“type size”) (see Etymology 3), possibly from pie referring to its mixed nature or pied (“checkered, multicoloured”).
Unclear. Possibly from the Greek letter (see Etymology 1) as a common example of non-alphabetic character, possibly from pica (“type size”) (see Etymology 3), possibly from pie referring to its mixed nature or pied (“checkered, multicoloured”).
Abbreviations.
Abbreviations.
From Mandarin 郫 (Pí).
See also for "pi"
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