Sat (letter)
While ፀ ሠ ጸ are the same sound while Sat is derived from Samekh
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Śat (ሰ) is a letter of the Geʽez script.[1][2] It is descended from South Arabian 𐩪. It represents both a historical "s" /s/ (a voiceless alveolar fricative), like the s in sink and "ṯ" /θ/ (a voiceless dental fricative), like the th in think.

It has the unicode designation U+1230 Ethiopic Syllable Sa.[3]