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Xi (letter) - Definition and Overview |
| Related Words: Rd, Rfd, Acknowledgment, Advice, Airmail, Alphabet, Answer, Art, Article, Autograph, Back, Beard, Belly, Billet, Blueprint, Body, Cap |
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Xi (upper case Ξ, lower case ξ) is the 14th letter of the Greek alphabet. In the system of Greek numerals it has a value of 60.
The upper-case letter Ξ is used as symbol for:
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