It's no surprise, then, that in all of that writing there would be occasions in which ordinary vocabulary would not do. The Oxford English Dictionary officially recognizes Asimov for coining the words "positronic" (a fictional technology) and "psychohistory," which deals with the psychology behind historical events.
So you've probably never heard of the former two, but certainly you've heard of robotics. That's right; Asimov also coined that word, but not purposely. He thought it already existed, just as the subjects of mechanics or hydraulics existed. In truth, he was the first, as far as can be determined, to use it. Unlike his other newly minted words, "robotics," is a highly useful term that continues to be widely applicable today.
Ironically, Asimov gained a reputation for writing in a very plain style, on which he prided himself. His aim was to communicate in a clear manner with his readers. As an author, that was more important to him than using a poetic or symbolic style, to the chagrin of his high-minded critics.
