Algorithm
The word 'algorithm' has its roots in Latinizing the name of Muhammad ibn Musa al-Khwarizmi in a first step to "algorismus". Al-Khwārizmī (, , c. 780–850) was a Persian mathematician, astronomer, geographer, and scholar in the House of Wisdom in Baghdad, whose name means 'the native of Khwarezm', a region that was part of Greater Iran and is now in Uzbekistan.
Arabic numerals
In 825 Al-Khwārizmī wrote a treatise in Arabic, "On the Calculation with Hindu Numerals", which survives only as the 12th-century Latin translation, "Algoritmi de numero Indorum". "Algoritmi", the translator's rendition of the author's name, gave rise to the word "algorithm".