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 Piauí, 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
19 June 2025
(noun) the condition of belonging to a particular place or group by virtue of social or ethnic or cultural lineage; “his roots in Texas go back a long way”; “he went back to Sweden to search for his roots”; “his music has African roots”
Coffee is a brewed drink prepared from roasted coffee beans, the seeds of berries from certain Coffea species. When coffee berries turn from green to bright red – indicating ripeness – they are picked, processed, and dried. Dried coffee seeds are roasted to varying degrees, depending on the desired flavor.
