[ zahy, sahy; Greek ksee ]
/ zaɪ, saɪ; Greek ksi /
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noun, plural xis.
the 14th letter of the Greek alphabet (Ξ, ξ).
the group of consonant sounds represented by this letter.
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British Dictionary definitions for xi (1 of 2)
/ (zaɪ, saɪ, ksaɪ, ksiː) /
noun plural xis
the 14th letter in the Greek alphabet (Ξ, ξ), a composite consonant, transliterated as x
British Dictionary definitions for xi (2 of 2)
Hsi or Si
/ (ʃiː) /
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 & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012