The Nuttall Encyclopedia
A word of Arab origin signifying a cipher, and employed to denote a neutral point in scale between an ascending and descending series, or between positive and negative.
Wood, James, ed. Entry for 'Zero'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/z/zero.html. Frederick Warne & Co Ltd. London. 1900.