Sentence:  If some number and[plus] the root of the root of a number are multiplied by the corresponding <WSD>apotome</WSD>, the result will be an <WSD>apotome</WSD>. 
Meaning of the word marked with <WSD> tags:  The difference between two quantities or lengths commensurable only in power, as between 1 and the square root of 2, or between the diagonal and side of a square.