apropos algebra, that comes from al-Jabr, which (approximately) means reunion, resetting of broken parts, or balancing, and is a shortnening of the title of the book (copy-pasted from wiktionary) al-kitāb al-muḵtaṣar fī ḥisāb al-jabr wa-l-muqābala, “The Compendious Book on Calculation by Completion and Balancing”.
the author of this book, Muhammad ibn Musa al-Khwarizmi also gave us the word “algorithm” (from al-Khwarizmi)
apropos algebra, that comes from al-Jabr, which (approximately) means reunion, resetting of broken parts, or balancing, and is a shortnening of the title of the book (copy-pasted from wiktionary) al-kitāb al-muḵtaṣar fī ḥisāb al-jabr wa-l-muqābala, “The Compendious Book on Calculation by Completion and Balancing”. the author of this book, Muhammad ibn Musa al-Khwarizmi also gave us the word “algorithm” (from al-Khwarizmi)
Most of the words starting with ‘al’ in Spanish come from Arabic. I think the weirdest one is ‘ojala’ (I hope) which comes from “Inshallah”.