Adjacent Words

pi definitions

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WordNet (r) 3.0 (2005)

n
1: the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
2: someone who can be employed as a detective to collect information [syn: private detective, PI, private eye, private investigator, operative, shamus, sherlock]
3: the scientist in charge of an experiment or research project [syn: principal investigator, PI]
4: the 16th letter of the Greek alphabet
5: an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs [syn: protease inhibitor, PI]

Merriam Webster's

abbreviation 1. Philippine Islands 2. private investigator 3. programmed instruction

Merriam Webster's

I. noun (plural pis) Etymology: Middle Greek, from Greek pei, of Semitic origin; akin to Hebrew p? pe Date: 1638 1. the 16th letter of the Greek alphabet — see alphabet table 2. a. the symbol ? 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 II. noun also pie (plural pies) Etymology: origin unknown Date: circa 1659 1. type that is spilled or mixed 2. a pi character or matrix III. verb also pie (pied; piing or pieing) Date: 1889 transitive verb to spill or throw (type or type matter) into disorder intransitive verb to become pied IV. adjective also pie Date: circa 1940 1. not intended to appear in final printing <pi lines> 2. capable of being inserted only by hand <pi characters>

Oxford Reference Dictionary

1. n. 1 the sixteenth letter of the Greek alphabet. 2 (as &pi.) the symbol of the ratio of the circumference of a circle to its diameter (approx. 3.14159). Phrases and idioms: pi-meson = PION. Etymology: Gk: sense 2 f. Gk periphereia circumference 2. adj. Brit. sl. pious. Phrases and idioms: pi jaw a long moralizing lecture or reprimand. Etymology: abbr. 3. US var. of PIE(3).

Webster's 1913 Dictionary

Pi Pi (p[imac]), n. [Gr. pi^.] 1. A Greek letter ([Pi], [pi]) corresponding to the Roman letter P. 2. Specif.: (Math.) The letter [Pi], [pi], as used to denote the number or quotient approximately expressing the ratio of the circumference of a circle to its diameter; also, the quotient or the ratio itself. The value of the quotient pi, to eight decimal places, is 3.14159265. The quotient pi cannot be expressed as a root of an algebraic equation; and from this fact follows the impossibility of the quadrature of the circle by purely algebraic processes, or by the aid of a ruler and compass.

Webster's 1913 Dictionary

Pi Pi, n. [See Pica, Pie magpie, service-book.] (Print.) A mass of type confusedly mixed or unsorted. [Written also pie.]

Webster's 1913 Dictionary

Pi Pi, v. t. [imp. & p. p. Pied; p. pr. & vb. n. Pieing.] (Print.) To put into a mixed and disordered condition, as type; to mix and disarrange the type of; as, to pi a form. [Written also pie.]

Collin's Cobuild Dictionary

Pi is a number, approximately 3.142, which is equal to the distance round a circle divided by its width. It is usually represented by the Greek letter ?. NUM

Moby Thesaurus

ascender, back, ball up, bastard type, beard, belly, bevel, black letter, body, bollix up, cap, capital, case, compose, confound, confuse, counter, descender, em, en, face, fat-faced type, feet, font, foul up, fumble, garble, groove, impose, italic, jumble, justify, letter, ligature, logotype, lower case, majuscule, make up, minuscule, mix up, muck up, muddle, nick, overrun, pi a form, pica, play hob with, point, print, riffle, roman, sans serif, scramble, screw up, script, set, set in print, shank, shoulder, shuffle, small cap, small capital, snafu, snarl up, stamp, stem, tumble, type, type body, type class, type lice, typecase, typeface, typefounders, typefoundry, upper case