The crossword solution for the term 'AUTHOR ISAAC' is ASIMOV, which is a six letter word. Isaac Asimov was an American author and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. He wrote or edited more than 500 books and an estimated 90, 000 letters and postcards. Asimov is widely considered a master of the science-fiction genre and one of the most prolific writers of all time.