Back خط الثلث Arabic Süls xətti AZ Сулюс BE সুলুস Bengali/Bangla Thúluth Catalan Сулюс CE Thuluth German Zuluz Spanish خط ثلث FA Thuluth French
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Thuluth (Arabic: ثُلُث, Ṯuluṯ or Arabic: خَطُّ الثُّلُثِ, Ḵaṭṭ-uṯ-Ṯuluṯ; Persian: ثلث, Sols; Turkish: Sülüs, from thuluth "one-third") is an Arabic script variety of Islamic calligraphy. The straight angular forms of Kufic were replaced in the new script by curved and oblique lines. In Thuluth, one-third of each letter slopes, from which the name (meaning "a third" in Arabic) comes. An alternative theory to the meaning is that the smallest width of the letter is one third of its widest part. It is an elegant, cursive script, used in medieval times on mosque decorations. Various calligraphic styles evolved from Thuluth through slight changes of form.