U+FD66 ARABIC LIGATURE SAD WITH MEEM WITH MEEM FINAL FORM

The Unicode character U+FD66, officially named ARABIC LIGATURE SAD WITH MEEM WITH MEEM FINAL FORM, was introduced in Unicode version 1.1. It is part of the Arabic PF A block, which belongs to the Basic Multilingual plane.

Categorized technically as a Other Letter, this character typically falls under the Arabic script. In terms of text layout and rendering, the glyph is Unknown and has no designated width in East Asian typography. When placed in bidirectional text, it behaves as an Arabic Letter character. Its visual representation remains not mirrored regardless of the reading direction.