pi
(noun) the 16th letter of the Greek alphabet
pi
(noun) the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
Source: WordNet® 3.1
pi (countable and uncountable, plural pis)
The 16th letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
(mathematics) An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265358979323846264338327950; usually written π.
(metal typesetting) Metal type that has been spilled, mixed together, or disordered.
Synonym: pie
• (irrational constant): Archimedes' constant, Ludolphian number, Ludolph's constant, Ludolph's number
pi (third-person singular simple present pies, present participle piing, simple past and past participle pied)
(metal typesetting) To spill or mix printing type.
Synonym: pie
pi (not comparable)
(typography) Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.
Abbreviations
pi
(typography) pica (conventionally, 12 points = 1 pica, 6 picas ≈ 1 inch)
piaster
pi
pious
• IP, Ip
Pi
(historical) A county of Chengdu, Sichuan, China.
• Pixian; Pe Heen, P'i Hsien (obsolete)
• IP, Ip
PI
Abbreviation of PiauÃ, a state of Brazil.
Initialism of Prison Industries (the prison-run work program for inmates)
(colloquial, Philippines) Initialism of Philippine Islands.
PI (countable and uncountable, plural PIs)
(informatics, SGML, XML) Initialism of processing instruction.
Initialism of partial induction (see AI)
Initialism of personal injury.
Initialism of politically incorrect (see PC)
Initialism of principal investigator (lead researcher on a grant-funded project)
Initialism of private investigator.
(biochemistry) Abbreviation of phosphatidylinositol (a phospholipid component of eukaryotic cell membranes, also abbreviated in PtdIns)
(pharmaceutical drug) Initialism of protease inhibitor.
(organic compound) Initialism of polyimide.
(medicine) Initialism of ponderal index.
(electronics) Initialism of power integrity.
Abbreviation of prohibited immigrant.
(fan fiction category) Initialism of pseudoincest.
(automotive) Initialism of port injection. (fuel injection)
• IP, Ip
Source: Wiktionary
18 April 2025
(noun) the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.
