English
pi
see also: PI, Pi
Pronunciation Noun

pi

  1. The 16th letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
  2. (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.
  3. (metal typesetting) Metal type that has been spilled, mixed together, or disordered.
    Synonyms: pie
Synonyms
  • (irrational constant) Archimedes' constant, Ludolphian number, Ludolph's constant, Ludolph's number
Translations Translations Verb

pi (pies, present participle piing; past and past participle pied)

  1. (metal typesetting) To spill or mix printing type.
    Synonyms: pie
Adjective

pi (not comparable)

  1. (typography) Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.
    In computing, pi characters may be entered with special key combinations.
Noun
  1. (typography) pica (conventionally, 12 points = 1 pica, 6 picas ≈ 1 inch)
  2. piaster
Adjective
  1. pious
    • 1927, Magdalen King-Hall, I Think I Remember: Being the Random Recollections of Sir Wickham Woolicomb, an Ordinary English Snob and Gentleman
      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.
    • 1972, Anya Seton, Green Darkness, Hachette UK ISBN 9781444709155
      “Those are very 'pi' sentiments. Was a preacher in Staffordshire— I was raised chapel, though've tried to forget it—he talked that way... redemption and the lot.”
    • 1994, Roger Gard, Jane Austen's Novels: The Art of Clarity, Yale University Press ISBN 9780300059267, page 101
      In Sense and Sensibility, as even you might agree, there's at least the danger of a rather pi moral framework clamping down on the spontaneous fun and leaving the sisters to survive - a bit drearily - on the periphery of a mean world.
Related terms
PI
Proper noun
  1. Abbreviation of Piauí#English|Piauí., a state of Brazil.
  2. Initialism of Prison Industries the prison-run work program for inmates
  3. (colloquial, Philippines) Initialism of Philippine Islands
    We're going back to the PI for a vacation this summer.
Noun

pi

  1. (informatics, SGML, XML) Initialism of processing instruction
  2. Initialism of partial induction see AI
  3. Initialism of personal injury
  4. Initialism of politically incorrect see PC
  5. Initialism of principal investigator lead researcher on a grant-funded project
  6. Initialism of private investigator
  7. (biochemistry) Abbreviation of phosphatidylinositol#English|phosphatidylinositol a phospholipid component of eukaryotic cell membranes, also abbreviated in PtdIns
  8. (pharmaceutical drug) Initialism of protease inhibitor
  9. (organic compound) Initialism of polyimide
  10. (medicine) Initialism of ponderal index
  11. (electronics) Initialism of power integrity
  12. Abbreviation of prohibited#English|prohibited immigrant#English|immigrant.
  13. (fan fiction category) Initialism of pseudoincest
  14. (automotive) Initialism of port injection fuel injection
Related terms
Pi
Proper noun
  1. (historical) A county in Chengdu, Sichuan.
Synonyms
  • Pixian; Pe Heen, P'i Hsien (obsolete)


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