pi

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Definitions (15)

Toggle American Heritage definitions American Heritage Dictionary (5)

  1. noun The 16th letter of the Greek alphabet. See Table at alphabet.
  2. noun Mathematics A transcendental number, approximately 3.14159, represented by the symbol π, that expresses the ratio of the circumference to the diameter of a circle and appears as a constant in many mathematical expressions.
  3. noun An amount of type that has been jumbled or thrown together at random.
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Examples

  • Then their greater numbers began to push the Drenai back across the blood-covered cobblestones of the archway. —  Waylander
  • And yet all that gentle loveliness of Nature made this terrific and wholesale destruction the more pitiable and awful. —  The Poison Belt
  • I remember another singular picture, some miles on the London side of Sevenoaks. —  The Poison Belt
  • Then a winch was set up behind the ballista. —  Waylander
  • George, let us get back to Rotherfield. —  The Poison Belt
 

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Pi has been looked up 246 times, favorited 0 times, listed 39 times, and commented on 8 times.

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Etymologies (3)

Toggle American Heritage etymologies American Heritage Dictionary (2)

  1. Late Greek pī, from Greek pei, of Phoenician origin; see p in Semitic roots.
  2. Origin unknown.

Toggle Century etymologies Century Dictionary (1)

  1. The name of the Greek letter π, πῑ, the initial letter of περιφέρεια, periphery, circumference.
 

Pronunciations
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/Pai/
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