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Pi vs Eta - What's the difference?

pi | eta |

As nouns the difference between pi and eta

is that pi is the name of the sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek while eta is the seventh letter of the Modern Greek alphabet, the eighth in Old Greek.

As initialisms the difference between pi and eta

is that pi is initialism of partial induction|lang=en see AI while ETA is estimated time of arrival.

As a verb pi

is to spill or mix printing type. Also, "to pie".

As an adjective pi

is not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.

As an abbreviation pi

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

pi

English

Noun

(en noun)
  • The name of the sixteenth 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 3.1415926535897932384626433832795; usually written .
  • (metal typesetting) Metal type that has been spilled, mixed together, or disordered. Also called pie.
  • Synonyms

    * (irrational constant) Archimedes' constant, Ludolph's constant, Ludolph's number

    Verb

  • (metal typesetting) To spill or mix printing type. Also, "to pie".
  • Adjective

    (-)
  • (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 are entered with special combinations of keys like ctrl-alt-x, or via character sequences such as &
  • 123;.
  • Abbreviation

    (Abbreviation) (head)
  • (typography) pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch)
  • piaster
  • pious
  • Anagrams

    * English two-letter words ----

    eta

    English

    Etymology 1

    From (etyl) .

    Noun

    (en noun)
  • The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.
  • (particle) A kind of electrically neutral meson having zero spin and isospin.
  • Etymology 2

    From (etyl) .

    Noun

    (en-noun)
  • A social outcast in Japan who is subjected to menial work, making up a class or caste of such people.
  • Anagrams

    * , (l), (l), (l), (l) English heteronyms ----