Waw (, also spelled vav or vau) is the sixth letter of many
Semitic alphabets, including
Phoenician,
Aramaic,
Hebrew,
Syriac , and
Arabic (in
abjadi order; it is 27th in modern Arabic order). In most Semitic languages it respresnts the
voiced labial-velar approximant , and in some (particularly Arabic) also the
long close back rounded vowel /uː/ depending on context, while in Hebrew it represents a labial
approximant, either or , a pattern shared by the non-Semitic languages using the Arabic alphabet (e.g.
Persian and
Urdu).
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