Arabic Letter Tah Initial Form

It writes Arabic ṭāʾ, the emphatic t sound. The initial form is a joining shape, not a different letter or an extra meaning. In Standard Arabic, ط contrasts with plain ت; dialects differ in how they pronounce the emphasis.

The letter's history belongs to a much older writing tradition. Its lineage includes an Aramaic form and Nabataean inscriptions from the first-century BCE through the fourth century CE. First-century CE papyri show cursive Nabataean, the script that developed into Arabic writing. These are dates in the letter's history, not dates for this computer-era form.

The same letter can have different spoken values across languages. Persian uses it in many Arabic-derived spellings but pronounces it /t/. In Urdu, ط is also pronounced like ت and is mainly found in Arabic-derived words; in both languages, its spelling can preserve a distinction that is not heard in pronunciation.

Why is ﻃ separate from ط?

It records a joining position, not a new sound.

Older text systems stored initial, middle, final, and standalone letter shapes as separate characters. Unicode retained these presentation forms for compatibility with old text, while ordinary Arabic text stores the base letter and lets the text system select its shape from its neighbors.

That is why ﻃ is unreliable for forcing a shape inside a word: neighboring letters may require another form, and software may convert it to ط. Use the base letter for normal Arabic writing; reserve the fixed form for data or tests that specifically require it.