Ḍād
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| Phonemic representation | dˤ (ðˤ) | |||||||||
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| Position in alphabet | 26 | |||||||||
| Numerical value | 800 | |||||||||
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Ḍād, or ṣ́ād (ض), is one of the six letters the Arabic alphabet added to the twenty-two inherited from the Phoenician alphabet (the others being ṯāʾ, ḫāʾ, ḏāl, ẓāʾ, ġayn). In name and shape, it is a variant of ṣād.
The Arabic letter ض is named ضاد ḍād. It is written is several ways depending in its position in the word:
The standard pronunciation of this letter in modern Standard Arabic and when reciting the Quran is the "emphatic" /d/: pharyngealized voiced alveolar stop 
[dˤ] , pharyngealized voiced dental stop [d̪ˤ] or velarized voiced dental stop [d̪ˠ].
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