From what word is the word algebra derived?

Answer 1

First attest 1551, from Middle Latin from Arabic al jebr"reunion of broken parts" as in computation, used 9th. century by Baghdad mathematician Abu Ja'far Muhammad ibn Musa al-Khwarizmi as the title of his famous treatise on equations ("Kitab al-Jabr w'al-Muqabala" "Rules of Reintegration and Reduction"), which also introduced Arabic numerals to the West. The accent shifted 17th century from second syllable to first. The word was used in English 15-16century to mean "bone-setting," probably from the Arabs in Spain.