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 (zī, sī, ksē)
The 14th letter of the Greek alphabet. See Table at alphabet.

[Greek xei, xī.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(zaɪ; saɪ; ksaɪ; ksiː)
n, pl xis
(Letters of the Alphabet (Foreign)) the 14th letter in the Greek alphabet (Ξ, ξ), a composite consonant, transliterated as x


(ʃiː) ,




(Placename) a river in S China, rising in Yunnan province and flowing east to the Canton delta on the South China Sea: the main river system of S China. Length: about 1900 km (1200 miles)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(zaɪ, saɪ; Gk. ksi)

n., pl. xis.
the 14th letter of the Greek alphabet (Ξ, ξ).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.xi - the cardinal number that is the sum of ten and oneXI - the cardinal number that is the sum of ten and one
large integer - an integer equal to or greater than ten
2.xi - the 14th letter of the Greek alphabet
Greek alphabet - the alphabet used by ancient Greeks
alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
Adj.1.xi - being one more than tenxi - being one more than ten    
cardinal - being or denoting a numerical quantity but not order; "cardinal numbers"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Tournament Season 2019-20 Season 2018-19 Quaid-e-Azam Trophy (first-class) Playing XI: 75,000 Non-Playing XI: 30,000 Playing XI: 50,000 Non-Playing XI: 12,000 Pakistan Cup One-Day Tournament Playing XI: 40,000 Non-Playing XI: 16,000 Playing XI: 35,000 Non-Playing XI: 8,750 National T20 Cup Playing XI: 40,000 Non-Playing XI: 16,000 Playing XI: 30,000 Non-Playing XI: 7,500 *All figures in PKR The players turning out for the Cricket Associations' second XIs, U19s, and city cricket associations will also see a rapid surge in their earnings.
It also includes 45 photos taken at different stages of Xis life, providing readers with more information about his work and life.
Saify XIs medium fast bowler Mohammad Badri conceded 21 runs in the super over as Abdullah made a rapid 17 and Hamza Sultan scored a boundary off the last ball to give their team a strong total to defend.