noun

(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.

The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.

(letterpress typography) Metal type that has been spilled, mixed together, or disordered.

(typography) pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch).

Piaster.

Initialism of personal injury. [(law) An injury to the body, mind or emotions, as opposed to an injury to property.]

Initialism of principal investigator (“lead researcher on a grant-funded project”). [(sciences) lead researcher on a grant-funded project]

Initialism of Prison Industries, the prison-run work program for inmates.

Initialism of private investigator. [An agent detective hired by a private party for the purpose of investigation or evidence gathering.]

Initialism of politically incorrect (see PC).

(pharmacology) Initialism of protease inhibitor. [(biochemistry) Any molecule that inhibits the function of proteases (enzymes that aid the cleavage of proteins), e.g. alpha-1 antitrypsin.]

(medicine) Initialism of ponderal index. [An anthropometric statistic that combines the height and weight of a person, similar to the body mass index.]

(psychology) Initialism of paradoxical intention. [(psychotherapy) A psychotherapeutic technique used to treat anxiety by repeatedly rehearsing the anxiety-inducing pattern of thought or behaviour, often with exaggeration and humor.]

(biochemistry) Abbreviation of phosphatidylinositol, a phospholipid component of eukaryotic cell membranes, also abbreviated in PtdIns. [(chemistry) a phospholipid containing inositol]

(organic chemistry) Initialism of polyimide. [(chemistry) Any polymer whose monomers are imides; used to make high-temperature resins]

Initialism of parallel import. [A legitimate product imported from another country without the permission of the intellectual property owner.]

Initialism of partial induction (see AI).

(informatics, SGML, XML) Initialism of processing instruction.

(business) Initialism of pro forma invoice.

Abbreviation of Piauí: a state of Brazil. [A state of the Northeast Region, Brazil. Capital: Teresina.]

(Philippines, politics) Initialism of People's Initiative.

Abbreviation of prohibited immigrant.

(fan fiction category) Initialism of pseudoincest. [Sexual involvement between family members who are not blood relations (e.g., siblings by adoption, stepparents and stepchildren, in-laws).]

(automotive) Initialism of port injection (“fuel injection”).

(surgery) Initialism of penile inversion.

(electronics) Initialism of power integrity.

(historical) A county of Chengdu, Sichuan, China.

(US, Philippines, historical, dated) Initialism of Philippine Islands. [The islands of the Malay Archipelago on which the country of Philippines is situated]

verb

(letterpress typography) To spill or mix printing type.

adjective

(typography) Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.

Pious.

Words related to pi

phin taun sigman lambdan rhon pn thetan upsilonn mun sinen sin on digamma omicronn kappan cosinen epsilonn zetan chin gamman nun logarithmn nonzero tin tan cologarithm neper omegan polynomialadj quadraticadj

Synonyms & related words for pi

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Words related to pi

Explore words related to pi — words associated with it, words that go with it, and its nearest matches in meaning. Related words include phi, tau, sigma, lambda, rho, p, theta, upsilon. Click any word to make it the center of the map and keep exploring the web of connections.