The term 'Saud' is derived from the name of the ruling family of Saudi Arabia, which is the House of Saud. The crossword solutions for this term are 'IBN, ' which stands for 'Ibn Saud, ' the founder of the modern Saudi state. Ibn Saud was a leader of the Al Saud dynasty and was responsible for unifying the various tribes of the Arabian Peninsula in the early 20th century. He was also the first monarch of Saudi Arabia, reigning from 1932 until his death in 1953.