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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. The 14th letter of the Greek alphabet. See Table at alphabet.
  2. n. See xi baryon.

Century Dictionary and Cyclopedia

  1. n. The Greek letter Ξ, ξ, corresponding to the English x.
  2. n. The Greek letter Ξ, ξ, corresponding to the English x and z.

Wiktionary

  1. n. The name for the 14th letter of Classical and Modern Greek. The 15th in Ancient and Old Greek.
  2. n. Either of a pair of hyperons having spin 1/2, which decay into a lambda particle and a pion.

WordNet 3.0

  1. adj. being one more than ten
  2. n. the cardinal number that is the sum of ten and one
  3. n. the 14th letter of the Greek alphabet

Etymologies

  1. Greek xei, xī.

Examples

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Lists

These user-created lists contain the word ‘xi’.

Comments

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  • hgould3 The American Heritage® Stedman's Medical Dictionary
    Sep 29, 2010

‘xi’ has been looked up 7536 times, added to 13 lists, commented on 1 time, and has a Scrabble score of 9.