U+0638 "ظ" Arabic Letter Zah Unicode Character

U+0638 "ظ" Arabic Letter Zah is the twenty-seventh letter of the Arabic alphabet and represents the emphatic voiced dental fricative sound, similar to the "th" in "this" but produced with the tongue pressed firmly against the upper teeth. It is part of the Arabic script used in languages such as Arabic, Persian, and Urdu, where it appears in words like "ظلام" (darkness) and "ظريف" (pleasant). In the Unicode standard, it is categorized under the Arabic block and is encoded with a right-to-left directionality, reflecting its usage in scripts that flow from right to left.